28. He ..... just
back. (come)
29. She. ... not yet . doing her homework. (finish)
(see) her for the first time.
30. I. . .(love) her since I
31. A strange thing ....
.... (happen) while I. .tt... a letter. (write)
32. John
his garden every two days. (water)
33. We..
each other for ten years. (know)
34. My grandfather...plintn.. all those trees before the war. (plant)
35. As I .Na.ng. dishes (wash), the phone i.na.. (ring)
36. Be quiet, I. .. to concentrate. (try)
37. Jane .........
many books about Chinese culture. (write)
38. She
Acte
her first book in 1990. (write).
39. She
. currently .... a book about Chinese painting. (write)