短文填空：

　　The sun is a star, a big ball of burning gases. Although the sun is like those s (1) you see on dark nights, it l (2) much larger. This is because it is much nearer to the e (3) . Other stars are so far a (4) that fight from them takes years to r (5) the earth. The sunlight gets to the earth in eight m (6) .

　　Yet the sun is a (7) 93 million miles a (8) , that is 3700 times the distance(距离)round the earth at the equator(赤道). Does this give you an i (9) of how f (10) light can travel?

1．________　2．________　3．________　4．________　5．________

6．________　7．________　8．________　9．________　10．________

用动词的适当的形式填空：

Someone ________ (ask) for you just now. Where ________ you ________ (be)?

用动词的适当的形式填空：

It's not easy ________ (learn) all the subjects well.

用动词的适当的形式填空：

Young Tom kept on ________ (try) out his new ideas.

用动词的适当的形式填空：

He told me he ________(be) back in a week.

用动词的适当的形式填空：

Do you know if she ________ (come) back tomorrow?

用动词的适当的形式填空：

People use satellites ________ (send) messages.

用动词的适当的形式填空：

So far, nobody ________ (tell) me about that.

用动词的适当的形式填空：

Several accidents ________ (happen) in this place the last two years.

用动词的适当的形式填空：

　　－Have you decided which ________(buy)?

　　－Not yet.