Условие:
Perfect Modals
x Find and correct the mistakes in the sentences.
1 You really mustn't have shouted at the customer like that!
2 Daniel can't have worked very hard. He was promoted to manager!
3 The volunteers must had spent a lot of time fixing the well in the village.
4 Jeremy isn't here. He must have leave for work already.
5 You couldn't have made a coffee for the boss; she's already got one.
6 The doctor could has treated more people, but there wasn't any medicine.
7 That can't have being Rosemary you saw; she's in Australia.
B Your assistant mustn't have been more helpful; you're lucky to have her.