1. The house was very quiet when I (get) got home. Everybody (go) had gone to bed.
2. The apartment was hot when I got home, so I (turn) turned on the air conditioner.
3. A: Did you meet (you/meet) Tom at the party last night?
B: No, he had already gone (already/go) home when I (arrive) arrived at the party.
4. I (feel) felt a little better after I (take) had taken the medicine.
5. I was late. The teacher (already/give) had already given a quiz when I (get) got to class.
6. It was raining hard, but by the time the class (be) was over, the rain (stop) had stopped
7. When I saw that Mike was having trouble, I (help) helped him. He (be) was very appreciative.
8. We were driving along the road when we (see) saw a car which (break) had broken down, so we (stop) stopped to see if we could help.

XIV
1, Emma went into the sitting room. It was empty but the television was still on. Someone had been watching it.
2, I really must go and see the dentist. One of my teeth has been aching for weeks.
3, I hope the bus comes soon. I've been waiting for 20 minutes.
4, He was very tired because he has been working  (work) all day.
5, At last the bus came.We.......had been waiting......for 20 min
6, The telephone ..has been ringing.(ring) for almost a minute. Why doesn't someone answer it?
7, has smoked

Bài XIII: 
1. The house was very quiet when I (get).........got............. home. Everybody (go) .............had gone.......... to bed.
2. The apartment was hot when I got home, so I (turn) ................turned................... on the air conditioner.
3. A: ...............Did you meet................ (you/meet) Tom at the party last night?
B: No, he ................had already gone................ (already/go) home when I (arrive) .............arrived..................... at the party.
4. I (feel) ..............felt...................a little better after I (take) .................had taken.................. the medicine.
5. I was late. The teacher (already/give) .................had already given................... a quiz when I (get) .................got.................. to class.
6. It was raining hard, but by the time the class (be)............... was.................. over, the rain (stop) ...................had stopped....................
7. When I saw that Mike was having trouble, I (help) ...................helped................ him. He (be) ..................was.................... very appreciative.
8. We were driving along the road when we (see) ..................saw............. a car which (break) ............had broken............. down, so we (stop) ...............stopped................. to see if we could help.

XIII 
1. got, had gone
2. turned
3. Did you meet, had already gone, arrived
4. felt, had taken
5. had already given, got
6. was, had stopped
7. i helped, was
8. saw, had broken, stopped
9. arrived, found, had broken, called
10. went, had never been, didn't take, was.

XIV )
1. had been watching
2. has been aching
3. have been waiting
4. had been working
5. have been waiting
6. has been ringing
7. hasn't been smoking
8. had been travelling.

bài trên kia nữa từ câu 5 đến câu 12 là thì hiện tại hoàn thành hoặc quá khứ hoàn thành

XIII
1. The house was very quiet when I (get) got home. Everybody (go) had gone to bed.
2. The apartment was hot when I got home, so I (turn) turned on the air conditioner.
3. A: Did you meet (you/meet) Tom at the party last night?
B: No, he had already gone (already/go) home when I (arrive) arrived at the party.
4. I (feel) felt a little better after I (take) had taken the medicine.
5. I was late. The teacher (already/give) had already given a quiz when I (get) got to class.
6. It was raining hard, but by the time the class (be) was over, the rain (stop) had stopped