Key: C

Detailed analysis: The sentence is: “Solution to the problem (51) ... people to demonstrate their quality as responsible citizens.” The verb should naturally collocate with “people to + verb.” “Encourages people to demonstrate ...” is the most natural and logical: solutions motivate people to act responsibly.

Meaning strength: “encourages” \(\gt\) best fits the idea of motivating; “requires” is \(\lt\) too strong and implies obligation by rule/law, which is not indicated here.

Option analysis:

A. makes: “makes people to demonstrate” is grammatically wrong; it should be “makes people demonstrate” (without “to”).

B. helps: “helps people to demonstrate” is possible, but the meaning is weaker; the text sounds like a call to responsible action rather than assistance.

C. encourages: correct grammar and best meaning.

D. brings: “brings people to demonstrate” is awkward and uncommon.

E. requires: could fit grammatically, but implies compulsory enforcement; less suitable for the tone of civic responsibility.

Key: A

Detailed analysis: The clause is: “Individuals as well as their industries (52) ... that they should not do anything (53) ... to the problem.” The paragraph is persuasive and forward-looking (what people should do). “Will realize” fits the intention: people and industries will come to understand their responsibility.

Grammar check: Subject “Individuals as well as their industries” is effectively plural \(\gt\) takes plural verb form; “has realized” is singular and mismatched.

Option analysis:

A. will realize: grammatically correct and fits the advisory tone.

B. could realize: expresses possibility, too weak for a statement about what should happen.

C. must realized: incorrect grammar; should be “must realize.”

D. are realized: passive, wrong meaning (people are not “realized”).

E. has realized: wrong subject-verb agreement (singular) and tense is too specific.

Correct Answer: D

Important note: In the image, the sentence stem for Soal 53 is not visible (only the options appear). So the answer can only be inferred from the most common grammar pattern used with these choices.

Why D is the most likely: Options A–E are typical for a blank that needs a verb form. In many test items, the blank is preceded by a form of be (am/is/are/was/were) or a time marker like “now/at the moment,” which strongly signals present continuous → “is contributing.”

A. “contributing” can be correct after a preposition (e.g., “by contributing”), but it cannot stand alone as the main verb without helping words.

B. “to contribute” is used after verbs/adjectives (e.g., “want to contribute,” “important to contribute”), but we cannot confirm that structure without the stem.

C. “contributes” is simple present (habit/fact). It is possible, but less diagnostic than D when tests include “is contributing.”

D. “is contributing” is a complete verb phrase for an action in progress and is commonly the intended answer in such items.

E. “is contributed” is passive and usually needs a clear object-focus meaning (e.g., “Money is contributed by donors”), which is less common unless the stem explicitly sets passive voice.

Correct Answer: C

Important note: The sentence stem is not visible in the image for Soal 54, so the answer is inferred from the most typical collocation among these verbs in environmental contexts.

Why C is the most likely: “dump” is strongly associated with the action of throwing garbage/waste somewhere (often illegally), which is a common tested verb in pollution/trash contexts.

A. “pollute” means to make air/water/land dirty, but it usually needs an object like “pollute the river.”

B. “waste” means use carelessly or throw away opportunities/resources; it is not as specific as “dump” for trash disposal.

C. “dump” fits common instructions/warnings like “Don’t dump trash here.”

D. “keep” means retain or hold, not discard.

E. “store” means keep something for future use, not dispose of it.

Correct Answer: A

Important note: The sentence stem is not visible in the image for Soal 55. The answer below is inferred from the most common test usage of these words.

Why A is the most likely: Among the options, “accepted” is the most frequently used as a past participle/adjective in common announcements such as “Your application has been accepted” or “He was accepted.”

A. “accepted” matches typical contexts about approval/admission.

B. “welcomed” means greeted warmly; it usually appears with “was welcomed,” but is less common as the target answer in generic approval contexts.

C. “expected” relates to predictions/anticipation, not acceptance/approval.

D. “cleared” means made free from obstruction/blame (e.g., “cleared of charges”).

E. “accounted” typically appears as “accounted for,” not alone in most sentence-completion items.