Dear Tony,
Thank you very much _____ your letter. Shanghai ______ beautiful! I like Shanghai _______ I like China. Now I’m fine and I’m busy _____ my lessons. I have seven classes every day. There are ______ in the morning and three in the afternoon. I have nine subjects this term. I like math, biology and history. My _____ subject is science, because it’s very interesting. Yes, my English is very _____, and I like it, but I _____ like Chinese, because it is too difficult ______ me, and I can’t learn it well. Do you play soccer? Can you _____ Chinese? I hope you can come to China one day.
Bob
A.to     B.of      C. for
A.be     B.is      C.are
A.so     B.but     C.and
A.at     B.about   C.with
A.four   B.three    C.two
A.best   B.favorite   C.like
A.good   B.well     C.better
A.isn’t    B.doesn’t   C.don’t
A.for     B.to       C.about
A.tell    B.say      C.speak