Choose the word/phrase that is closest in meaning to the underlined part.
The cotton gin was commonplace on many nineteenth century farms.
Đáp án: C
Greenpeace, international environmental organization (1)______ to preserving the earth's natural resources and its diverse plant and animal life.
Choose the sentence that is closest in meaning to each of the following questions.
When he called to tell me that he was studying, I didn't believe him because I could hear the noise of a party in the background.