连词成句。
【小题1】What, in, the, classroom, is(?)
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【小题2】in,  is,  It,  the,  desk(.)
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【小题3】the,  is,  Where,  picture(?)
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【小题4】me, Let, clean, windows, the(.)
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【小题5】are, The, green, desks (. )
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—Please close the window. (   )
—________.

A．Thank you.

B．Yes, Mr Green.

C．I’m sorry.

Let’s _____ a new one. （    ）

A．/

B．buy

上课了，老师叫你们看黑板时，他可以说：（  ）

A．Look the blackboard.

B．Look at the blackboard.

_______  be late for class. ( )

A．Can’t

B．Don’t

C．Do