21. Let's have a short rest, ________

Let us have a short rest, _______

A. will you B. will we C. shall we D. don't you

20.---I'm tired _________ taking a train.

---You'd better take a rest.

---I'm tired _________ taking a train.

---You'd better take a bus.

A. from B. by C. for D. of

19. Newton was famous _______ a great scientist.

Newton was famous _______ his great discoveries.

A. for B. in C. as D. because of

18. I ________ five yuan on the book.

I ________ five yuan for the book.

The book _____ me five yuan.

A. paid B. spent C. took D. cost

17. This book is worth ______.

This book is worthy ________.

This book is worthy of _______.

A. being dipped into B. to be dipped into C. dipping into D. dipped into

16. He spent _______ hours than she on maths.

He spent _______ time than she on math

A. many more B. much more C. many D. much

15. ---________ are you going to do with the letter

---I'm going to have it burned.

---________ are you going to deal with the letter

---I'm going to have it burned.

A. Whether B. Why C. What D. How

14. I have nothing to do but _____ his advice.

I have nothing to choose but _______ his advice.

A. follow B. following C. to follow D. followed

13. Tom and Jack are good at music, but ________ of them is good at art.

Tom and Jack are good at music, and ________ of them is good at art.

Tom and Jack are good at music, and ________ of them are good at art.

A. neither B. either C. both C. two

12.No one but I ________ asked to help rebuild the tower.

Not you but I ________ asked to help rebuild the tower.

Not only you but I _______ asked to help rebuild the tower.

A. am B. is C. are D. were