A. where you buy itB. where do you buy itC. where you b……

单项选择题—Sharon, remember to lock the door before leaving the house. —（）

A. OK. I will.
B. Yes, please.
C. It's hard to say.
D. It doesn't matter.

单项选择题In the last few years, there（）great changes in the country.

A. had been
B. were
C. have been
D. has been

单项选择题—Where was your brother at this time last night —He was writing an e-mail（）I was watching TV at home.

A. as soon as
B. after
C. until
D. while

单项选择题—Can you tell me （） —By doing more speaking.

A. how I will improve my English
B. which way can I choose
C. how do I deal with my English
D. what's wrong with my English

单项选择题I（）my clothes, and the phone rang.

A. wash
B. washed
C. am washing
D. was washing