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---What do you think of the twin sisters?

---They are quite different. One is outgoing, __________ is very serious.

A. another B. the other

C. the others D. Others

---________ fine day! Let’s go hiking together. ---Good idea!

A. What B. What a C. How a D. How

---What’s wrong with you, Dave?

---My homework can’t be __________ on time because I’ve left it at home.

A. given out B. got over

C. showed up D. handed in

---Is the notebook Carla’s?---It _____be hers. It has Mary’s name on the cover.

A. could B. might C. must D. can’t

She said she had some trouble ___________ her homework.

A. finish B. finishing

C. to finish D. Finished

Our country _______ a lot in the last fifty years.

A. will change B. changed

C. changes D. has changed

Health is very _____and every student knows the _____of keeping healthy.

A. important ; importance B. important ; important

C. importance; importance D. importance; important

This question sounds _____ than that one.

A. many more polite B. much more polite

C. many more politely D.much more politely

We can’t work out the physics problem. Can you tell us ____?

A .how to do B. what to do it

C. how to do it D. what should to do

I don’t know if he tomorrow. If he , I’ll tell him about it.

A. will come, will come B. comes, comes

C. comes, will come D. will come, comes