Information has been put forward ________ more middle school graduates will be admitted into universities.
A. while         B. that         C. when         D. as

It is indeed extremely unlikely that two complex snowflakes will look exactly ________（相同的）.

Silly me! I forget what my luggage looks like.（ ）

What do you think of ______ over there?

A. the one　　　 B. this　　　　 C. it　　　　　　　 D. that

If the earth stopped moving, everything _____.

A. would disappear　 B. disappeared　 C. will disappear 　 D. disappears

One learns a language by making mistakes and ______ them.

A. correct　　　　 B. correcting　　

C. corrects　　　　 D. to correct

 You can hardly imagine what great difficulty we had _______ the work.

A. to do　　 B. done　　 C. doing　　　 D. do

What will the world use for power when it　 oil?

A. run out of　　　　　 B. is running out

C. has run out of　　　 D. ran out

He looked tired. He seemed ______a sleepless night.　

A. to have　 B. he had 　 C. having　 D. to have had

As is known to us all, _____ tiger is in _____ danger of becoming extinct.

A. the, a　　　　　　　　　　 B. the, 不填

C. a, 不填　　　　　　　　　 D. 不填, the