I won’t tell the student the answer to the math problem until he ________ on it for more than an hour.
| A．has been working | B．will have worked | C．will have been working | D．had worked |
It is when the planethat you’d better find out at the book office.
| A．will take off | B．is going to take off |
| C．is taking off | D．takes off |
It’s so hot. Can you help me to wipe the sweatmy back?
| A．from | B．out of | C．off from | D．away |
His son learns pianoguitar.
| A．also | B．as well as | C．too | D．as good as |
He haschange, so you can ask him for an exchange.
| A．little | B．not a little | C．few | D．not a few |
After watchingTV, she playedviolin for an hour.
| A．不填；不填 | B．the； the | C．the；不填 | D．不填； the |