chia động từ :
1. She (ride) a horse before.
2. Mary (ring) hours and hours ago.
3. He wrote four best sellers before he (be) twenty years old.
4. The last time it (rain) was 3 years ago.
5. We stepped outside the front door and it (began) to rain.
6. It started to rain at 2 o'clock and it still (rain).
7. Why do you watch the milk (boil) over?
8. I (walk) along the street when I suddenly (feel) something hit me in the back. I (not know) what it was.
9. Where is Tam? He said he (be) here at 4.30
1. She (ride) a horse before.
-> rode
2. Mary (ring) hours and hours ago.
-> rang
3. He wrote four best sellers before he (be) twenty years old.
-> was
4. The last time it (rain) was 3 years ago.
-> rained
5. We stepped outside the front door and it (began) to rain.
-> began
6. It started to rain at 2 o'clock and it still (rain).
-> has been still raining/ is still raining
7. Why do you watch the milk (boil) over?
-> boiling
8. I (walk) along the street when I suddenly (feel) something hit me in the back. I (not know) what it was.
-> walked - felt - don't know
9. Where is Tam? He said he (be) here at 4.30
-> was
