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题型：单选题题类：常考题难易度：普通

仁爱科普版九年级下Unit 6 Entertainment andFriendship Topic 2同步练习1

After you learn about the lives of the pilots, especially their hard training, you can decide ______ you want to become a pilot or not.

A、if B、how C、why D、whether

举一反三

Some people are interested in ________ women's sense of smell is better developed than _______ of men.

I don't know _______ he will come tomorrow. ________ he comes, I'll tell you.

—Can you make sure ?

—Sorry, I can't.

We're not sure if it ________ tomorrow. If it ________，we won't go hiking.

—David asked in China.

—Of course not. Chinese usually shake hands with a lady as a greeting.

I don't know _________ he will come. ________ he comes, I will tell you.

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