精英家教網 > 初中英語 > 題目詳情
—How often do I need to feed the fish?
-They      food every day, or they will be hungry.
A.must giveB.mustn’t giveC.mustn’t be give.D.must be given
D

試題分析:句意:你多久喂一次魚?他們每天都必須被喂食,否則他們會餓。主語they指魚,是動作的承受者,故用被動結構:be + done,含有情態動詞的被動結構:情態動詞+ be + done,結合句意及句子結構,故選D
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