题目内容

We can introduce more useful websites__you.

A. for
B. to

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-__ do you spend online every day?-for about 1 hour.

A. How much
B. How long
C. How often

Electronic books will ___paper books.

A. recycle
B. replace
C. renew

-______the Internet?

A. What do you like
B. How do you like
C. What do you think

Computers are our friends_____you use them in the wrong way.

A. because
B. unless
C. as long as