It is reported that ________ drink cans are ________ away in that country each year.

   A. seven, millions                     B. seven billion, thrown 

C. billions of, throwing                 D. seven billion of, thrown

 Let sunshine in while ________ much of the warmth from _______ out.

   A. keeping, getting    B. to keep, getting  C. keep, to get   D. keeping, to get

 It is said that there are hardly ________ things on the moon.

   A. lifeless           B. alive          C. living        D. lively

 It is ________ our life that we must ________ our environment.

   A. to, protect         B. to, harm      C. for, protect    D. for, provide

The sick man is still in _________, and the doctors are watching him carefully.

A. dangerous       B. threatened     C. threats        D. danger

 Those people have been to Shenyang, Dalian, Shanghai, ________Guangzhou.

A. too            B. as well        C. as well as      D. also have

 Plastic are often used to make __________coverings for many products.

    A. protect         B. protective     C. protection      D. protector

 When you take exercise, you should __________ more water.

    A. take out        B. take off       C. take down      D. take in

 In the Spring F________（節(jié)日） , Chinese people make dumplings and perform lion and dragon dances.

I am going to t _______（旅行） to some places of interest.