There isn't much work ________ by them.

[　　]

________ is no doubt that he will come here some day, but ________ is doubtful when he will come.

[　　]

________ by a crowd of people, he felt nervous, ________ what to say.

[　　]

A．Watching; didn't know

B．Having watched; and not know

C．Having been watched; not known

D．Being watched; not knowing

________ that a good student like him should have made such a big mistake.

[　　]

________ surprised me most was to see some of the villagers ________ on the benches in the comer.

[　　]

________ darker now, we had to stay in the village for the night.

[　　]

Through the window, he ________ see what was happening.

[　　]

To learn to speak English well, ________.

[　　]

A．much practice is needed

B．one needs much practice

C．much practice is needed by one

D．one is needed much practice

________ raining and cold today, we have to stay at home.

[　　]

________ no need for us to discuss the problem again. It has already been settled.

[　　]