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Chia động từ thì quá khứ đơn hoặc quá khứ tiếp diễn.
1. I (be)........ ready before you (count)........ten.
2. Jonh must eat his breakfast before he (go)....... out.
3.Miss Helen (help)........you as soon as she (finish)........that letter.
4. He (tell)........you when you (ask)........him.
5. I (come)..........and (see)......you before i (leave).....for England.
1. I (be)........ ready before you (count)........ten.
2. Jonh must eat his breakfast before he (go)....... out.
3.Miss Helen (help)........you as soon as she (finish)........that letter.
4. He (tell)........you when you (ask)........him.
5. I (come)..........and (see)......you before i (leave).....for England.