I think a good friend _____ me laugh. [ ]
A. takes
B. makes
C. let
D. have
答案：B
根据句意和所给首字母，在句子空白处填入适当的单词。
小题1:China and India are both A__________ countries ,while Britain is a European country.
小题2:What’s the best gift Joe has ever r_________ .
小题3:Victor has been skating s_________ he was five.
小题4:Most of the children are afraid of m_________ .
小题5:Did your brother f_________ his math test? He looks so sad.
本法测定的是空气中（）
A.氨气和颗粒物中铵盐的总量
B.离子铵
C.非离子氨
D.总氮量
