________that I could use a special piece of cloth to attract people's attention, I decided to do an experiment.

A．Having realized    B．Realizing

C．Being realized     D．Realized

I was ________tired ________I didn't want to go shopping.

A．neither；nor        B．either；or

C．so；that       D．not；until

I did ________know the news________he told me.

A．neither；nor        B．either；or

C．so；that       D．not；until

What's the ________language in China?

A．speaking       B．spoken

C．be spoken    D．to speak

A better plan was ________at yesterday's meeting.

A．put forward  B．put away

C．put down      D．put on

The writer was so absorbed________his writing that he forgot to eat.

A．on  B．of

C．in    D．at

The________look on her face suggested that she________it before.

A. surprising; wouldn't know

B. surprised; hadn't known

C. surprising; hadn't known

D. surprised; shouldn't know

It was proved that drunk­driving was________for the death of five people in Nanjing.

A. to blame         B. blamed

C. being blamed        D. blaming

Only by working hard________succeed.

A．we can  B．we are

C．can we  D．are we

His words suggested that he________a policeman.

A．were      B．was

C．should  D．be