He made another wonderful discovery, （ ） of great importance to science.

It was not known （ ） he had said during the interview.

（ ） has already been pointed out before, English grammar is not a set of dead rules.

She insisted that the seats in the theater （ ） in advance to insure a better view．

The film （ ） him of what he had seen in China.

The two boys had so _____ in common that they soon became good friends.

Many students thought about the third question for quite a while and had great difficulty answering it. Obviously, it was _____ all.

As population increases, （ ）.

He had never given a speech to so many people, so he felt（ ） .

All the passengers （ ） in the accident were sent to the nearby hospital in no time.

I recognized John （ ） he entered the room.

The color of the skirt does not （ ） that of the coat.