1Before Dora had done the shopping, she visited her friend.

->. Before Dora did the shopping, she had visited her friend.

vì:

-Đứng sau before phải là S+V(ed)+...

2.When the programme finished, I switched the television off.

->When the programme finished, I switched off the television.

vì:switched+O+V(infinitive)

3.After buying the tickets, the two businessmen caught the train

->After buying the tickets, the two businessmen took the train

4.When Guy passed the exam, his father had been buying him a car.

->When Guy passed the exam, his father bought him a car.

5.It's a lovely fire, isn't it? I'd only put a match to it a few minutes ago.

->It's a lovely fire, isn't it? I'd only put a match to it few minutes ago.

6.We watered the garden after planting the seeds

->We water the garden after planting the seeds

7.I'm rather tired because I had been running to get here on time

->I'm rather tired because I had to run to get here on time

CHÚC BẠN HỌC TỐT!!!- FROM THANH

#Muoi