On a hot day, I decide to mow our extremely hilly lawn. It was likely to 21 a jungle（丛林）with weeds growing wildly. I need to mow it at once.
After several false 22 , I had to examine it and finally got our old lawn mower 23 . I was mowing and trying hard to push the machine uphill, which was really a hard job, for the machine was too old to work well. I was so 24 that I complained under my breath, so I decided to take a short break.
At the top of a rise, I 25 to see my 12-year-old John Thomas standing there, with a smile on his face and a glass of 26 in his hand. "Here, Mom, "he said, "have a drink, Want me to help you? Dad 27 me work on hte flat places."
I 28 the ice water and went to sit in the 29 of a tall tree. As I took my drink, I 30 my son. To my surprise, he didn't seem to be 31 the normal mowing pattern. And he kept smiling at me 32 he worked. I wondered 33 made him so happy? I thought to myself.
After a while, he 34 mowing and looked in my direction. "Hey, Mom. Could you 35 here? " "He's always naughty like this, lazy again?" I said to myself 36 . Then I stood up and walked across the lawn, noticing that he had missed a sizable spot. "John, you didn't..." My angry words gradually became 37 , for the spot I thought he'd missed had been 38 mowed into the shape of a（an） 39 , suddenly I felt something warm and gentle rising from inside.
"Like it, Mom? It's mine and it's for you." he asked with a big 40 .
"Now I'll finish the job."
21. A. turn on B. turn into C. turn down D. turn up
22. A. starts B. words C. ends D. behavior
23. A. work B. move C. going D. flying
24. A. cheerful B. tired C. cared D. boring
25. A. looked through B. looked over C. looked after D. looked up
26. A. hot tea B. chocolate C. milk D. ice water
27. A. asks B. allows C. lets D. agrees
28. A. drank B. heated C. accepted D. received
29. A. shade B. leaves C. root D. top
30. A. saw B. watched C. observed D. noticed
31. A. feeling B. finding C. following D. feeding
32. A. if B. since C. whether D. as
33. A. what B. that C. all D. it
34. A. continued B. went on C. stopped D. finished
35. A. go over B. turn over C. driver over D. come over
36. A. happily B. angrily C. eagerly D. anxiously
37. A. heavier B. thicker C. louder D. quieter
38. A. carefully B. carelessly C. casually D. comfortably
39. A. heart B. apple C. hand D. foot
40. A. sign B. smile C. surprise D. sigh