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精英家教網 > 高中英語 > 題目詳情

【題目】___________________, the experiment will be successful.
A.If carefully doing
B.If it was done carefully
C.If carefully done
D.If doing carefully

【答案】C
【解析】句意:這個實驗如果認真被做就會成功。句中if引導的條件狀語從句中,省略了主語和be動詞,主語experiment與動詞do之間是被動關系要用被動語態,完整句子應是:If the experiment is done carefully,故選C.

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