文档介绍：Unit 4 Astronomy: the science of the stars 根底练****br/>单项选择：
1. In ____ space, there are plenty of planets besides ____ earth_.
8. Patsy was celebrating last night after ___________________ twins.
语法练****br/>1. ______ he is a strict and good headmaster is known by everyone in the school.
A. That B. Because C. For D. /
2. There is no doubt ______ he will come tonight.
A. that B. whether C. if D. when
3. _______ makes no difference _____ he will come or not.
A. This, if B. That, if C. It, whether D. This, whether
4. ______ is important to a person is _____ he must know ________ he is fit for.
A. It, what, that B. That, how, what C. It, that, that D. What, that, what
5. ____ is a fact that the book A Brief History of Time written by Hawking is popular with ordinary people.
A. There B. This C. It D. That
6. It’s no longer a question now _____ man can land on the moon.
A. that B. if C. whether D. what
7. It was at the very beginning ______ Mr Black decided to send more fire-fighters there.
A. when B. that C. what D. where
8. _____ all the inventions have in common is _____ they have succeeded.
A. What, what B. That, that C. What, that D. That, what
9. ______ is no doubt that you will be warmly welcomed.
A. It B. He C. There D. That
10. ----_______ can I do with such a situation? ----Take _____ m