I ______ ten years old. (   )

A．am

B．is

C．are

We have two new________.

A．pupils

B．pupil

C．/

Billy likes sports. He is ____________ American student.

A．an

B．a

C．the

He likes ________ to music. (   )

A．listen

B．listening

C．listens

连词成句。(注意字母大小写和标点符号)
【小题1】down, fire, a, lot, of, can, burn, trees (.)
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【小题2】play, matches, mustn't; at, home, we, with (.)
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【小题3】smoke, we, in, forest, the, mustn't(.)
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【小题4】fire, must, be, we, careful, with(.)
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