问题
选择题
She looks very busy . I want to help her , but I don't know ___________ .
A．what to do
B．what to do it
C．how to do
D．why to do
答案
答案：A
她看上去很忙，我想帮助她，但是我不知道该做什么。根据题干的含义可知选择A. what to do
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