Great changes ________ since we entered E-times. And the computer is widely used throughout the world.

A. have happened       B. have taken place

C. have been happened   D. have been taken place

He _____ with a pencil. Now a pen _____ by him.

A.used to write; is used to writing

B.used to write; is used to write

C.is used to write; used to write

D.is used to writing; used to write

---Bill is a strong-minded boy.

---He sure is. He often says nothing can stop him _____ his dream.

A.to avoid   B.from avoiding

C.to achieve  D.from achieving

There are so many kinds of mobile phones here. We can’t decide  _____.

A. what to buy    B. to buy what

C. which to buy    D. to buy which

It took me about two hours to clean the house, My mother _____ what I did.

A. looked after    B. took good care of

C. took pride in    D. paid much attention to

My cousin ____ the chance of working abroad and returned to his hometown.

A. gave away  B. gave out  C. gave back  D. gave up

– A number of students ________ in the dining hall.

-- Let me count. The number of the students ________ about 400.

A. are, is  B. is, are  C. are, are  D. is, is

--- I won’t have time to go shopping with you this afternoon.

--- But you ______ me yesterday.

A. ordered  B. mentioned  C. promised  D. knew

Now the water in the river has ____ and we should ____ money to repair the broken bridge.

A. raised, rise  B. risen, raise

C. rose, raise  D. risen, rise

Yesterday he was walking _____ the police station when a plane flew  _____ his head.

A.past; through B.across; over

C.past; over    D.through; across