Put the verbs into Past Continuous Tense or Past Simple:
1. You ( wear ) __________ your new hat when I (meet) _______ you yesterday.
2. While you (play) ______ the piano, I (write) ________ a letter.
3. I (sit) ________ down for a rest while they ( repair ) _______ his shoes.
4. I (go) _______ HCM city last month.
5. He (work) _______ when I (come) ________ in.
6. While I (look) ________ for my suitcase, I could see that somebody trying to open it.
7. This Time last year, we (study) ________ at a university in Ha Noi.