1 . Miss White asked a question, but it was ________ that nobody could answer it.

A．very difficult

B．too difficult

C．difficult enough

D．so difficult

2 . —What do you think of yesterday’s English speech?
—Well, he spoke ________ fast ________ I couldn’t follow it.

A．so; that

B．both; and

C．too; to

D．as; as

3 . The burglars ran ________ fast that the policemen could not catch them right at the scene.

A．very

B．too

C．so

D．such

4 . 她表演的这样好，以至于被误认为是一位真正的演员了。
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5 . The room is _________ dark _________ I can’t see anything in it.

A．too; to

B．so; that

C．such; that

D．such; so

6 . 这个病毒太厉害了，导致机器人不能再正常工作了。
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7 . 那个司机开得太快，以至于汽车失去了控制。
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8 . He is very young. He can’t make his own decision.(合并为一句)
He is ________ young ________ he can’t make his own decision.

9 . 这个讲座如此无聊，不值得听。
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10 . David swam ________ fast ________ nobody could beat him.

A．so; that

B．enough; to

C．too; to