The shopkeeper did not want to sell for ______ he thought was not enough.
| A．what | B．which | C．where | D．how. |
---You seem to have had that car for years.
---Yes, I should sell it ________ it still runs.
| A．before | B．during | C．until | D．while |
.Most of the problems the government had been paying much attention to __ at last.
| A．solve | B．being solved | C．were solved | D．are solved |
Last year many well-known singers did everything _______ help the people in the tsunami-hit countries.
| A．she could do | B．she could to | C．that she could do | D．that she could |
John decided that he had to do something to _______ his anger .
| A．let off | B．give off | C．give out | D．send out |
If we keep wasting so much energy, _____are that our oil wells will dry up and the environment will be destroyed.
| A．problems | B．difficulties | C．questions | D．chances |