A、help
B、happy
C、have
第2题
A、What I can do for you
B、What can I do for you
C、Who can I do for you
D、How can I for you
第5题
A、No. I want some juice
B、You can help me
C、Yes. I want some lychees
第7题
A、You mustn't
B、No
C、You'd better not
D、I'm sorry, you can
第10题
第11题