()1. Let's look at the bag. Can you see___________“s”on the corner of____________ bag?

A.a;a              B.a;the           C.an; a             D.an; the

 ()2. ____________mother is a worker.

  A. Mary and Mike's B. Mary's and Mike's C. Mary's and Mike D. Mary and Mike

 ()3. The number of the students in our grade__________about six_________, __________of

,them are girls.

A.are; hundreds; two-thirds  B.is; hundred;two-third

  C. is; hundred; two thirds   D.are; hundreds; two third

 ()4. He has searched the_________for 2 hours for the information about Yang Liwei.

 A.mouse           B.keyboard       C.Internet           D.computer