题目内容
Animals should not be locked in cages; they should be in their normal _____.
A. environment B.position C.residence D. dwelling
A
解析:
environment(=surroundings, circumstances)环境,environment作集合名词用时,只用单数形式:We should work hard to improve our environment. (单词,不可数)Children need a happy home environment. (单数,可数)
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