When I got there, they the old people clean the house.
A、helped
B、are helping
C、were helping
— has Jack been studying English?
—Since he was seven years old.
A、How longB、How oftenC、When
The little girl has to spend two hours the violin every day.
A、to practice playing
B、practicing playing
C、to practice to play
We should read English for thirty minutes every day.
A、at leastB、at lastC、at first
My father was watching TV the earthquake happened.
A、as soon as B、whileC、when
Would you mind here?
A、don’t smoke
B、not smoking
C、not to smoke
