________ your son is well again, you no longer have anything to worry about.
| A．If | B．when | C．Now that | D．As soon as |
We should learn from those ________ are always ready to help others.
| A．who | B．whom | C．they | D．that |
—As a student, we should study hard.
— Yes, ______ we study, ________ results we’ll get.
| A．the harder; the good | B．the harder; the best |
| C．the hard; the better | D．the harder; the better |
I_______ my homework at nine o'clock last Sunday morning.
| A．am doing | B．was doing | C．do | D．did |
The boss _________ company I worked in two years ago has _______ in solving such kind of problem.
| A．whose; many experiences | B．who; many experiences |
| C．whose; much experience | D．who; much experience |
She _______ live in North China. As a result, it is difficult for her to _______ the climate here.
| A．was used to; get used to | B．used to; get used to |
| C．used to; used to | D．was used to; use to |