一、was did went had wasn’t weren’t spent cooked read cleaned lived studied
二、1.was did do did 2.did do went 3.did went
三、1.enjoyed 2. studied 3.Did go 4.was 5. was 6.had 7.visited 8.were 9.has had 10.Did have 11.bought 四、1.didn’t come 2.Did play did didn’t 3.Where did go 4. Did watch 5.did homework last night 五、1.D 2.B 3.B 4.D 5.B 6.A 7.B 8.D 9.D 10.A 11.C 12.C 13.D 14.A 15.C 16.A 17.D 18.B 19.C 20.A 21.A 22.C 23.A 24.A 25.A
六、1. is-was 2. go-went 3. goes-went 4. can-could
5. saw-see 6. wasn’t-didn’t 7. didn’t-didn’t do 8. wait-waited 9. find-found 10. did he-did he do
七、1.came 2. didn’t go，got 3. read 4. was 5. called 6.heard 7.began 8.picked 9.didn’t do 10.didn’t watch 11. Did go 12.did get got 13. made 14. told 15.was 16. were 17.weren’t 18.was 19.moved 20.did come21.have 22.didn’t clean 23.Was 24.were
