Exercise 16.3
Unit 16 - Past perfect continuous·English Grammar in Use (4th edition)
Question
Put the verb into the most suitable form, past continuous (I was doing), past perfect (I had done) or past perfect continuous (I had been doing).
Unit 16 - Past perfect continuous·English Grammar in Use (4th edition)
Question
Put the verb into the most suitable form, past continuous (I was doing), past perfect (I had done) or past perfect continuous (I had been doing).