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选择填空1. it has stopped raining,let's start to work.A.While B.

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选择填空
1. it has stopped raining,let's start to work.
A.While B.Since C.For D.Because
2.Father wanted to know( )next.
A.how to do B.what to do
3.I can't tell _________or not.
A.if he needs any help B.whether he needs any help
另附说明 3x!
1.只有since有既然的意思,所以根据句意需要,B
2.与how和what的词性有关系,what连接代词how连接副词
所以应该是how to do it 和what to do,选B
3.whether or not 中学阶段你可以把它背成一个短语,记住虽然都是从属连词,但if不能加or not选B