This is Mr White’s ________ trip to Beijing. He has been there twice before.
A. firstB. secondC. third
– ________ do you hang out with your friends?
– About once a week.
A. How soonB. How oftenC. How long
We will have no water to drink _________ we don’t protect the earth.
A. untilB. ifC. unless
I got an e-mail this morning. It was ________ my pen pal, Tony.
A. fromB. forC. to
– Would you like some coffee?
– No, thanks. I ________ drink coffee. Coffee is bad for my stomach.
A. nearlyB. usuallyC. hardly
– What do you want to be when you grow up?
– ________ engineer like my father.
A. AnB. AC. The
