1.Helen has left.
2.My sister has illed.
3.My brother has gone to bed.
4.Father locked the door.
5.Mother has cooked the dinner.
1) calendar
2) sticker
3) cassette
1 - b
2 - c
3 - d
4 - a
5 - b
TASK 2
didn't she?
do they?
can't they?
isn't she?
will they?
TASK 3
Our students can stay in British families, can't they?
The Principal of the municipal local school will invite Russian students to Britain, won't he?
You didn't see Sasha yesterday, did you?
The girls are responsible for the social programme, aren't they?
I am not a pupil of the 7th form, am I?