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4. The doctors tried/had been trying their best, but while they were performing the operation, the patient died/was dying.

5. We'd been watching the film for half an hour before we realized that we were making/had made a terrible mistake. We went/had gone into the wrong cinema!

6. On the morning of the accident, Mr Davis just finished/had just finished a night shift at a local factory, and didn't have/hadn't had any sleep for 24 hours.

Ffffffsusjbshjxj    3   17.04.2020 17:48    13