________ many times, but she still couldn't remember it.

[　　]

They are thinking of ways ________ pollution ________ happily.

[　　]

A．of preventing , to live

B．to prevent , living

C．to prevent, to living

D．prevent, live

从所给的四个选项中选择最佳答案

The boy failed to put the picture down, because it was ________．

[　　]

A．beyond his reach　　　B．out of her reach

C．in his reach　　　　　D．too much to reach

从所给的四个选项中选择最佳答案

It's so fine a day．Many people ________ on their back on the grass in parks．

[　　]

A．are laying　　　B．laid　　　C．are lying　　　D．lay

从所给的四个选项中选择最佳答案

It was so ________ a poem that quite a few children were ________ to tears．

[　　]

A．moved, moved　　　B．moving, moving

C．moving, moved　　　D．moved, moving

从所给的四个选项中选择最佳答案

The teacher said to the students, “You ______ your homework yesterday．”

[　　]

A．should finish　　　B．must finish

C．ought to do　　 　D．should have done

从所给的四个选项中选择最佳答案

—I can't find my pen．

—You ______ it in the classroom．　　　

[　　]

A．must leave　　　　　 B．must forget

C．must have forgot　　　D．must have left

从所给的四个选项中选择最佳答案

—Please let me know if you succeed ______ this experiment．

—I won't fail ______ so．　　　

[　　]

A．to do; to do　　　　B．doing; doing

C．in doing; to do　　　D．to do; in doing

You _______ have a day off tomorrow if you finish the work today． 　　　

[　　]

A． may　　　B． might　　　C． would　　　　D． should

Man ______ fighting a battle against pollution． 　　　

[　　]

A． is 　　　B． are　　　C． has　　　D． have