3.____________ your father busy this afternoon?

A.Do　　　　　　　　　　　　　　　　　 B.Are　　　　　　　　　　　　　　　　　　　　 C.Is

2.Our room is ____________ than theirs.

A.much cleaner　　　　　　　　　　 B.the cleanest　　　　　　　　　　　　　　　 C.more cleaner

1.Which classroom is ____________ in your school?

A.bigger　　　　　　　　　　　　　　　 B.the biggest　　　　　　　　　　　　　　　 C.biggest

5.Is Harbin ____________ than Hainan?(cold)

4.I think this movie theater is ____________ ____________ than that one.(comfortable)

3.That movie is ____________ ____________ that I have ever seen.(bad)

2.My home is the closest to school but his home is ____________ ____________ (far).

1.This hotel has the friendly ____________ in our town.(serve)

讲析：4. 学生的功课肯定不止三门，所以答案应该是C。

9. work作为 “工作”时，是个不可数名词，因此，只能用some; a lot of修饰。所以答案是A。