题目

When it was clear _________ she did not speak a word of English,I tried to talk to her using the Spanish I learned while living in Europe. A.what　              B.that　         C.why　        D.how  答案：B 解析: 此题考查形式主语it和主语从句。主语从句往往需要作形式主语it放在主语位置上,而把从句放在句末。由于谓语部分 “was clear”表示“确定”语气,所以主语从句不该由疑问词what,why,how引导。

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