小学课外活动的特点有( )。

单项选择题—Sorry, do you mind if I smoke here —Yes,（）.

A. you could
B. go ahead
C. I do
D. my pleasure

单项选择题The new library building （）last week.

A. was completed
B. is completed
C. completed
D. has completed

单项选择题—It's really hot today. What drinks do we have in the fridge —We have some（）.

A. noodle
B. cheese
C. sausages
D. lemonade

单项选择题—Mr Wang, must I come again on Sunday morning to clean the windows —No, you （）. I have asked others to do it.

A. don't have to
B. mustn't
C. can't
D. shouldn't

单项选择题—（） —I have a headache.

A. How do you do
B. What do you do
C. What's wrong with you
D. How do you like it