I. 单选
1. I have to go to the doctor _________ Friday afternoon. A. at             B. on              C.  in              D. with
2. Many children like junk food, _________ it isn’t healthy.A. if           B. so               C. because            D. although
3. —I’m going away for _________ days. Can you look after my dog for me?   —Sure.    A. a few          B. a lot           C. a bit          D. a little
4. My brother is lovely, he often makes me _________ .   A. laugh       B. to laugh