4. complete these short conversations using must+have+v3 and can’t+have+v3. 10 points.
– is it true that jack failed his exams? – he … (fail) the exams. he studied hard during the year.
– i’ve heard that mary and ann have quarrelled badly. – they … (quarrel). i’ve just seen them talking.
– i thought jack and fred were friends! now look at them fighting! – they … (quarrel). sometimes they just can’t agree.
– i’ve heard tim has finished school. do you know where he is now? – he … (enter) university. he was the top student in our school.
– jack has dropped out of school, hasn’t he? – he … (drop) out of school. he’s got many friends in this school and he’s quite a good student.
1. can't have failed
2. can't have quarreled
3. must have quarreled
4. must have entered
5. can't have dropped
Объяснение: