Ex 3.
1. Yes, he has/ No, he hasn't
2. yes, they have/ No, they haven't
3. Yes, he has/ No, he hasn't
4. yes, they have/ No, they haven't
5. yes, she has/ No, she hasn't
6. yes, I have/ No, I haven't
7. yes, she has/ no, she hasn't
8. yes, he has/ No, he hasn't
Ex 4
1.
(+) They decided to leave soon.
(-) They didn’t decide to leave soon
(?) Did they decide to leave soon?
2.
(+) We have been here for 2 weeks
(?) Have they been here for 2 weeks?
3.
(+) We have missed the train
(-) We haven't missed the train
4.
(-) I haven't had breakfast this morning
(?) have you had breakfast this morning?
5.
(+) She has passed the exam
(?) has she passed the exam?
6.
(+) I have met his mother
(-) I haven't met his mother
7.
(-) We haven't eaten too much chocolate
(?) Have they eaten too much chocolate?
8.
(+) I have known David for 10 years
(?) Have you known David for 10 years?
9.
(+) She has read the book
(-) She hasn't read the book
