1. “How often do you take the medicine ？”

　　“______ four hours.”

　　A. For        B. Any           C. Every       D. Each

　　【答案及解析】答案選 C。

　　2. “Is this bike yours？”

　　“No， it's ______.”

　　A. Bob        B. Bobs        C. Bob's         D. Bobs'

　　【答案及解析】答案選 C。

　　3. “Is there ______ good on TV this evening？”

　　"Sorry， nothing good. "

　　A. nothing    B. something    C. anything    D. everything

　　【答案及解析】答案選 C。肯定句中用something，否定句和疑問(wèn)句中用anything.

　　4. You have a good suggestion， but it's not as practical as _______.

　　A. he         B. him         C. his        D. her

　　【答案及解析】答案選 C

　　5. A chemist prepares his experiments carefully before trying to carry _____ in his lab.

　　A. it out     B. out it          C. them out      D. out them

　　【答案及解析】答案選 C。carry out 實(shí)施 賓格放在詞組中間，名詞放在詞組后面。如，carry out his experiments.