Mary is giving me English lessons__________my teaching her Chinese.
| A．exchange for | B．exchange |
| C．in exchange for | D．to exchange for |
Jack's business is not as good as before，so he has to ________the expenses of his
company.
| A．cut off |
| B．cut away |
| C．cut up |
| D．cut down |
On the way home，he ________a storm.
| A．caught |
| B．was caught by |
| C．caught hold off |
| D．was caught in |
We took our umbrellas with us when we went out in order to ________us from a heavy rain.
| A．ban |
| B．preserve |
| C．prevent |
| D．protect |
Did the fire ________or was it________？
| A．go out；go out |
| B．go out；put out |
| C．put out；go out |
| D．put out；put out |
You shouldn't keep silent when________.
| A．speaking |
| B．spoken to |
| C．spoken |
| D．speaking to |