---_______ do you go to the library?---Three times a week.
You look exhausted. What happened ___________ you? A. on B. with C. to
The doctor said he was overweight and should pay attention ___________ exercise. A. to do B. to doing C. do
You can’t take away things that ___________ you. A. aren’t belong to B. don’t belong C. don’t belong to
–___________ do you visit your grandparents? –Twice a month. A. How long B. How soon C. How often
He ___________ the volunteer group last year and ___________ many activities since then. A. took part in…joined B. joined…took part in C. joined…has taken part in