Some insects the color of their surroundings to protect themselves.

A. take in B. take off

C. take on D. take up

After completing and signing it, please return the form to us in the envelope .

A. providing B. provided

C. having provided D. being provided

The cost of renting a house in central Chengdu is higher than in any other area of the city.

A.it B.one C. that D. ones

—Did you enjoy yourself last night?

—Yes, it’s very nice of you. I appreciated to the party.

A.to be invited B.to have invited

C. having been invited D. having invited

The manager asked him not to come again. _______, he was fired.

A. In other words B. In a word C. In the end D. As a result

I would really appreciate _______ if you could take my advice into consideration.

A. this B. that C. you D. it

Hurry up. Our plane _______ at 7:00 pm according to the timetable. It will be just an hour left before it _______.

A. will leave, takes off

B. leaves, takes off

C. is leaving, is taking off

D. will leave, will take off

With so many essays _______ ,he won’t have time to go shopping with his parents this afternoon.

A. writing B. written C. to write D. be written

My mother was over the age limit and ________, her application for the job was refused.

A. as a result B. in conclusion

C. worse still D. what’s more

If we _______ now to protect the environment, we'll live to regret it.

A. hadn't acted B. haven't acted

C. don't act D. won't act