1. I used my time well while I (wait) _______ for the train - I wrote some emails 2. I (not/work) _______ when my boss walked in my office. I was on Facebook. 3. I saw a car crash when I (wait) _______ for the taxi. 4. Tom (have) _______ long hair and a beard when he was at university. 5. It started raining while I (drive) _______ to work.

2 câu trả lời

1. was waiting

2. wasn't working

3. was waiting

4. was having

5. was driving 

xin ctlhn ạ

1. waited (hai vế while đều là thì quá khứ đơn để chỉ một hành động xảy ra xuyên suốt một hành động khác đang xảy ra)

2. wasn't working

3. was waiting

4. was having

5. was driving (dùng while ở đây chỉ hai sự việc xảy ra cùng lúc)

Cách dùng when:

When + S + was/were + V-ing + O, S + V2 + O.

S + was/were + V-ing + O + when + S + V2 + O.

Cho mình ctlhn nha!

Chúc Bạn Học Tốt!❤

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