If ________ , I'll come to your help at once. Don't hesitate ________ me.

[　　]

________ , the truck driver tried to get away without ________ .

[　　]

A．Knocked down by a truck, feeling sorry

B．Having knocked down a boy, punishing

C．The boy lying wounded, being found

D．Knocking down a boy, punished

—We could have walked to the station; it was so near.

—Yes. A taxi ________ at all necessary.

[　　]

—If he ________ , he ________ that food.

—Luckily he was sent to the hospital immediately.

[　　]

A．was warned, would not take

B．would be warned, had not taken

C．had been warned, would not have taken

D．would have been warned, had not taken

________ anything about her daughter's death, she went to work as usual.

[　　]

They ask me to have a drink with them. It is at least ten years since I ________ a good drink .

[　　]

I would rather you ________ your mind. Actually it is time you ________ it all over again.

[　　]

They went to the city hall ________ a No. 5 bus. As they were caught ________ a traffic jam, they were late ________ the meeting.

[　　]

Leaning ________ the wall, the little girl shook ________ cold and fear.

[　　]

The well-known poet devoted all his life ________ in nature.

[　　]