упр. 233 раскройте скобки, употребляя глаголы в Past simple или past perfect ???

Question

Людиии помогите пожалуйста с английским- завтра зачет (((

<img src="http://photo.sprashivalka.com/orig/b3f/990/d8a/40b13042bc8ca27d.jpg" width="600" height="450"> 
 
1.Tom (to return) from the cinema at five o'clock. 
2. Tom (to return) from the cinema by five o'clock. 
3.I (to finish) my homework at seven o'clock. 
4.I (to finish) my homework by seven o'clock. 
5.He (to think) that he (to lose) the money. 
6.Ann (to tell) me that she (to see) an interesting film. 
7.When I (to come) home, mother already (to cook) dinner. 
8.When father (to return) from work, we already (to do) our homework. 
9.When the teacher (to enter) the classroom, the pupils already (to open) their books. 
10. Kate (to give) me the book which she (to buy) the day before. 
11.Nick (to show) the teacher the picture which he (to draw). 
12.The boy (to give) the goats the grass which he (to bring) from the field. 
13.Mother (to see) that Nick (not to wash) his hands. 
14.The teacher (to understand) that Lena (not to do) her homework. 
15.I (to know) that my friend (not yet to come) 
16.When I (to wake) up yesterday, father already (to go) to work. 
17. Nick (to think) that his father (not yet to come) home. 
18. Mary (to tell) us that she (to cook) a good dinner. 
19. Yesterday I (to find) the book which I (to lose) in summer. 
20. When we (to come) to the station, the train already (to leave).

Serega · Accepted Answer

Бедняжка, как же ты собираешься сдавать? 
1. Tom returned from the cinema at five o'clock. 
2. Tom had returned from the cinema by five o'clock. 
3. I finished my homework at seven o'clock. 
4. I had finished my homework by seven o'clock. 
5. He thought that he had lost the money. 
6. Ann told me that she had seen an interesting film. 
7. When I came home, mother had already cooked dinner. 
8. When father returned from work, we had already done our homework. 
9. When the teacher entered the classroom, the pupils had already opened their books. 
10. Kate gave me the book which she had bought the day before. 
11. Nick showed the teacher the picture which he had drawn. 
12. The boy gave the goats the grass which he had brought from the field. 
13. Mother saw that Nick had not washed his hands. 
14. The teacher understood) that Lena had not done her homework. 
15. I knew that my friend gad not come yet 
16. When I woke up yesterday, father had already gone to work. 
17. Nick thought) that his father had not come home yet. 
18. Mary told us that she had cooked a good dinner. 
19. Yesterday I found) the book which I had lost in summer. 
20. When we came to the station, the train had already left.