16.You have no idea ________ I went through to get this task finished in time.
A. which B. that C. whether D. what
【答案】D。解析:考查同位语从句,句意:你不知道为使这项任务及时完成,我经历了些什么。动词短语"go though"意为"经历",分析句子结构可知,从句中的谓语"go though"缺少宾语,连词"that和whether"在名词性从句中不当任句子成分. 排除BC;"which"表示已知道事物中的哪一个,不合句意,从而排除A;因此应该用疑问代词"what"引导同位语从句,解释说明名词"idea"的具体内容,因此D为正确答案。
17.He talked about the classmates and the school _____ he had visited.
A. who B. that C. which D. about which
【答案】B。解析:先行词为the classmates and the school,从句为he had visited,二者构成的完整句为He had visited the classmates and the school.所以不难发现先行词在限定性定语从句中作visited的宾语使用,先行词既指人又指物。故选B。
18.While he ______ his homework, his mother came in.
A. does B. did C. was doing D. do
【答案】C。解析:此题考查时间状语从句。while引导的时间状语从句,从句往往用进行时态。故选C。
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