My sister plenty of volunteer work in the past seven years.
A. does B. is doing C. has done D .had done
- did you take swimming classes last term?
- Once every two weeks.
A. How often B. How many C. How long D. How far
In order to finish the task in time,John kept for four hours without rest.
A. work B. to work C. works D. working
As it gose cooler ,you had better a coat over your sweater.
A. wearing B. wear C. to wear D. wears
Let’s have a discussion about whethea it is to talk on the phone while driving.
A. safe B. save C. safety D. safely
You are not allowed to enter the theater you have a ticket.
A. because B. When C. if D. unless
