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题型：单选题题类：模拟题难易度：容易

You'd better look up the new word in a dictionary _____ you don't know it .

A、if B、that C、though D、whether

举一反三

——Can I join their club?
——I am afraid you will be refused __________ you've passed all their tests.

如果明天不下雨，我的家人将去野餐。

{#blank#}1{#/blank#} {#blank#}2{#/blank#} {#blank#}3{#/blank#} {#blank#}4{#/blank#} tomorrow, my family will go for a picnic.

The book was so interesting that he had read it for three hours ______ he realized it.

—Are you going to climb the mountains tomorrow?

—Yes. But if it _____, I_____ at home.

—How time flies! The middle school life is coming to an end.

—Yes. We have to say goodbye, our friendship will last forever.

It's raining outside. He watches TV _____ playing outside.

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