:I. 单项选择 (Vocabulary and structure) (共20小题，计20分)
A) 选择能够替换划线部分的最佳选项。
1. Good habits help us
keep in good health.
A. health
B. unhealthy C.
healthy
2. Please go to the doctor if you are ill.
A. look at the doctor B. help the doctor C. see the doctor
3. As the eldest child in the family, Tom has to help look after
his little sisters.
A. look at B. look for C. take
care of
4. Why not have a rest and enjoy every minute of it?
A. How to B. Why dont we C. Can we
