Unit 12 : A vacation abroad : Test 3

Nguyễn Lan Phương
26 tháng 2 2022 lúc 10:25

1.After David had gone home, we arrived. 

2.Before we took a look around the shops, we had had lunch.

3.When we got out of the office, the flight had gone out.

4.By the time we started our work, she had explain everything clearly. 

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