题目内容
9.-Are you sure you have to?It's been very late.-I don't know ________ I can do it if not now.( )
A. | when | B. | what | C. | that | D. | how |
分析 ---你确定你必须要做么,现在太晚了.
---我不知道如果我现在不做该何时去做.
解答 答案:A.根据I don't know 说明后面整句是宾语从句,而宾语从句I can do it if not now可知句子不完整,缺时间状语,如果我现在不做该何时去做,故选A.
点评 本题考查宾语从句的连接词,在充分分析句型基础上便能选出正确答案.

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