题目内容
11.It's not clear ________the president can do to end the big problem.( )A. | how | B. | which | C. | whether | D. | what |
分析 不清楚总统能做什么来结束这个大问题.
解答 答案:D,根据从句可以看出这里do后缺少宾语,而且该句子没有先行词,It在句中作形式主语,可以判定这是主语从句,主语从句中缺少宾语,因此排除that和whether;而which在名词性从句中表选择而且有一定的选择范围,该题没有给出可供选择的范围,所以排除which,故选what.
点评 本题考查主语从句的连接词,在充分分析it 形式主语的基础上再结合语义便能选出正确答案,
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