________ the composition, I handed it in.

[　　]

________ a reply, he decided to write again.

[　　]

She heard a terrible noise, ________ brought her heart into her mouth.

[　　]

The ________ why Jack was late was that he missed the bus.

[　　]

The ________ car is made in Shanghai.

[　　]

The sentence wants ________ once more.

[　　]

A．to explain

B．explaining

C．be explained

It's no use ________ about it.

[　　]

The room needs ________.

[　　]

________ going there himself saved us a good deal of trouble.

[　　]

I didn't understand the questions ________ were asked in French.

[　　]