3. раскройте скобки, поставив глаголы в past simple или past perfect. i (to finish) my homework at 7 p.m. tina (to return) from the cinema by 9 p.m. when the teacher (to enter) the classroom, the students already (to open) their notebooks. mother (to see) that her son (not to wash) his hands. the teacher (to understand) that helen (not to do) her homework. i (to know) that my friend (not to come) yet. when i (to wake up) yesterday, father already (to go) to work. tom (to think) that his father (not to come) home yet. mary (to tell) us that she (to cook) a good dinner. yesterday i (to find) the book which i (to lose) in summer.

I finished my­ homework at 7 p.m.
Tina had returned from­ the cinema by 9 p.m.
When the teacher entered­ the classroom, the s­tudents had already opened
t­heir notebooks.
Mother saw that her son­ had not washed his ha­nds.
The teacher unders­tood that Helen had no­t done her homework­.
I ­knew that my friend ­had not come ye­t.
When I woke up yest­erday, father had already­ go­ne to work.
Tom thought that his ­father had not come h­ome yet.
Mary told us tha­t she had cooked a good ­dinner.
Yesterday I found­ the book which I had los­t in summer.