21. After you finish your work, you________ a break. A. should take B. have taken C. might have taken D. takes 22. Almost everyone________ for home by the time we arrived. A. leave B. left C. leaves D. had left 23.Your brother never ________to work by bus, does he? A.go B.went C. has gone D. goes 24. While her husband was in the army, Janet________ to him twice a week. A. was writing B. wrote C. was written D. had written 25. We ________English this time last week. A. learned B. were learning C. have learned D. had learned 26. Is it raining? - No, it isn't but the ground is wet. It________ A. rained B. had rained C. has rained D. has been raining 27. Her family________ to America before 1975. A. moved B. have moved C. had moved D. would move 28. When I arrived at the party, Martha________ home already. A. went B. have gone C. had gone D. would go 29. Henry________ for 10 years when he finally gave it up. A. has smoked B. has been smoking C. had smoked D. had been smoking 30. Yesterday morning I got up and looked out of the window. The sun was shinning but the ground was very wet. It________ A. rained B. has been raining C. had rained D. had been raining