Tom spent two years _________ his book.
| A．finishing writing | B．to finish writing |
| C．finishing to write | D．to finish to write |
This is Mr White’s ________ trip to Beijing. He has been there twice before.
A. first B. second C. third
– ________ do you hang out with your friends?
– About once a week.
A. How soon B. How often C. How long
We will have no water to drink _________ we don’t protect the earth.
A. until B. if C. unless
I got an e-mail this morning. It was ________ my pen pal, Tony.
A. from B. for C. to
– Would you like some coffee?
– No, thanks. I ________ drink coffee. Coffee is bad for my stomach.
A. nearly B. usually C. hardly