Помогите с заданиями 4,5,6 - вопрос №2997341

Exercise 1
1 her
2 Bob's
3 My
4 students'
5 your
6 Our
7 his
8 girl's

Exercise 2
1 has
2 are
3 has
4 were
5 am
6 have
7 had
8 is
9 were

Exercise 3
1 some
2 any
3 some
4 any
5 no/some
6 some
7 some
8 no/some

Exercise 4
difficult — more difficult — (the) most difficult
little — less — least
long — longer — longest
great — greater — greatest
famous — more famous — most famous
important — more important — most important
small — smaller — smallest
young — younger — youngest
low — lower — lowest
dangerous — more dangerous — most dangerous

Exercise 5
I could answer this question.
He couldn't speak English.
I had to send the telegram.
You had to sign this document.
He may have changed the date of this meeting.
She may not have done it.

Exercise 6
1 We signed this document yesterday.
2 I never saw this girl.
3 She has been waiting for you since morning.
4 He is reading something.
5 He translates three articles a week.
6 Next week I will make a report.
7 At 4 o'clock yesterday we were watching TV.

Exercise 7
1 What does he play?
2 What are they doing now?
3 Who has already heard the news?
4 When will she phone him?