单选题
If I hadn't stood under the ladder to catch you when you fell, you______now.
A、
wouldn't be smiling
B、
couldn't have smiled
C、
won't smile
D、
didn't smile
【正确答案】
A
【答案解析】
解析:句意是,当你掉下来时,如果我没有站在梯子底下抓住你,你现在不可能笑了。所以正确答案为A。
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