He bought another new car. He _____ a lot of money.

选词组填空（共5小题；每小题2分，满分10分）。

1.While ____________ a knife to cut something, you need to be very careful.

2. After the earthquake, the whole city ____________.

3. Has she _____________ to improve her terrible handwriting?

4. _____________ get the first prize in the sport meeting, he insists on practicing every day.

5. Ever since he was put into prison, he _____________ a lot of sufferings.

He bought another new car. He _____ a lot of money.

A．must earn         B．must have earned   C．can earn          D．could have earned

----Do you think Jim will pass the Chemistry exam?

----Sure. He ______a lot of time on it.

He said while ______ in the countryside, he ______ a lot of hardships and of course learned a lot.