1. Susan has studyed in her room when she heard the noise.

=> When + thì hiện tại hoàn thành, hiện tại đơn

2. What did they do at eleven p.m. last night - it was so noisy?

=> last night -> quá khứ đơn

3. After going to the library, I met Jane and we went out for some coffee.

=> After + thì hiện tại tiếp diễn , quá khứ đơn

4. I was eight years old when my elder sister was teaching me how to ride a bike.

=> When + thì quá khứ tiếp diễn , quá khứ đơn

5. John didn't go to school last week because he was ill.

=> last week -> quá khứ đơn

6. I didn't know anything about the plane crash in my neighborhood because I am working inside at that time.

=> at the time -> hiện tại tiếp diễn

7. My mother gives me ten dollars and asked me to go to the supermarket.

=> là sự thật hiển nhiên -> quá khứ đơn

8. The children are playing in the living room when they broke the vase.

=> When + thì quá khứ tiếp diễn , quá khứ đơn

9. I buoght this coat in 2009, but it is still fashionable.

=> in 2009 -> quá khứ đơn

10. My grandmother was making breakfast while my grandfather was doing the gardening.

=> While + quá khứ tiếp diễn , quá khứ tiếp diễn