—Hi, Bruce. Here is a letter for you.

  —Thanks. I wonder          .

A. who the letter was from           B. who was from the letter

C. who was the letter from          D. who from the letter was

I know a little about Thailand, as I      there three years ago.

A. have been  B. have gone  C. will go  D. went

—So many problems! I’m tired.

  —You should try to         them by yourself. You are not a child any longer.

A. get into          B. get off       C. get on             D. get over

—Would you like         camping with me?

   —I’d like to. But I’m busy         my homework.

A. to go; to do     B. to go; doing     C. going; to do     D. going; doing

Most students like the teachers         understand them well.

A. which   B. who    C. where    D. when

—It’s difficult to get to the other side of the river.

—I think a bridge         over the river.

A. should be built   B. should build   C. will build   D. has built

 Li Na is          famous          all the tennis fans in China know her.

A. too; to    B. enough; to   C. as; as   D. so; that

 More and more people have a low-C life and the air is getting much

     than a few years ago.

A. clean     B. cleanest    C. cleaner    D. the cleanest

 —         do you know so much about the UFO?

—I usually get the information by surfing the Internet.

A. How    B. What    C. Which    D. Where

 —Which of the two T-shirts will you take?

—I’ll take        . One is for my brother and the other is for myself.

A. either   B. both     C. neither     D. all