Air pollution is defined as any contamination of the atmosphere that disturb the natural composition and chemistry of the air.

Indicate the underlined part that needs correction: Air pollution is defined as any contamination of the atmosphere that disturb the natural composition and chemistry of the air.

  • A. is defined
  • B. disturb
  • C. composition
  • D. chemistry

Giải đáp

Đáp án: B. disturb

The underlined part that needs correction is disturb. It should be disturbs.

Air pollution is defined as any contamination of the atmosphere that disturbs the natural composition and chemistry of the air.

“Disturb” is a singular verb, but “air pollution” is a singular noun. Therefore, the verb must also be singular. The correct verb is “disturbs.”

The other answer choices are correct. “Is defined” is the correct verb form for the singular noun “air pollution.” “Composition” and “chemistry” are both correct nouns.

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