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题型：单选题题类：常考题难易度：普通

北师大版初中英语八年级上册Unit 4 Lesson 11同步练习1

He was about to go to bed ________ the doorbell rang.

A、while B、as C、before D、when

举一反三

Taxi Apps（打车软件）can help us travel around more easily. ___more and more people like using them.

There is no air________water on the moon.

Betty is in the hospital ________ her father is ill.

—I have a brother. What about you?

—I don't have a brother, ________ I have a sister.

—I think the environment is terrible these years.

—Yes, it will be even worse the government takes action it.

_______ there were no seats, he stood there to listen to the speech.

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