根据短文内容，从A、B、C、D四个选项中选择一个能正确填入相应空格内的最佳答案，并把答题卡上对应题目的正确答案标号涂黑。
One day Li Hong’s class had an English exam. The teacher marked (评分) the student’s papers and then gave them 41 to the students. Li Hong 42 his paper. He saw his mark was 86.
Class was over. The students all 43 out and played on the playground, 44 Li Hong still sat there. He 45 the exercises again. 46 he gave his paper to the teacher. This time he got the exercises right.
47 his classmates said to him, “ 48 did you do the exercises again? You can’t get more (更多) marks for that.”
With a smile (微笑) Li Hong answered, “I 49 think so. I am not 50 the marks.”
41．A．down B．front C．back D．up
42．A．looked at B．looked like C．looked for D．looked up
43．A．went B．go C．goes D．going
44．A．but B．and C．or D．so
45．A．do B．does C．doing D．did
46．A．So B．But C．Or D．Then
47．A．One in B．One of C．First in D．First of
48．A．What B．Why C．When D．How
49．A．am not B．doesn’t C．didn’t D．don’t
50．A．at B．for C．to D．of
40．- How was your weekend on the farm?
- Great! We ________ with the farmers.
A．enjoy ourselves B．went fishing C．will work D．make friends
39．- Would you like ________ orange juice?
- No, thanks. I’m not thirsty.
A．any B．some C．many D．/
38．There was a strange (奇怪的) sound outside. Mary went out and ________ around, but she _______ nothing.
A．looked; saw B．saw; saw C．watched; looked D．looked; find
37．- How about the movie you saw yesterday?
- Some people think it’s boring; ________ think it’s exciting.
A．others B．other C．the others D．another
36．- What are Mr. and Mrs. Black doing?
- They ________ tea in the garden.
A．are drinking B．drank C．have drunk D．drink
35．We ________ school uniform every day.
A．wear B．put on C．puts on D．wearing