China ______ the WTO for more than 10 years, and it has brought great changes to it.

China ______ the WTO for more than 10 years, and it has brought great changes to it.

China ______ the WTO for more than 10 years, and it has brought great changes to it.

1. A.
   has joined
2. B.
   has been in
3. C.
   has become a member of
4. D.
   has joined in

China ________ the WTO in 2001.

A. join                 B. joins            C. joined               D. joining

 按括号内的要求完成改写后的句子，每空一词。

86Tom is renting videos for vacation. (变为否定句)

Tom _____________ _____________ videos for vacation.

87 I go to school on foot every day.(变为一般疑问句)

____________ you ____________ to school on foot every day?

88 There were some famous singers in the concert.(变为一般疑问句)

____________ ____________ ____________ famous singers in the concert?

89 My parents go bike riding once a month.(划线部分提问)

____________ ____________ do your parents go bike hiking?

90 China joined the WTO ten years ago. (划线部分提问)

____________ ___________ China ____________ the WTO?

91 Lucy studies English well. Lily studies English well, too.(合并句子，句意不变)

____________ Lucy and Lily ____________ ____________ ___________ English study.