II. Put the verbs in brackets in past simple or past continuous. 
    1.    While Tom (read) ________, Mai Ly (watch) _________ a documentary on TV.
    2.    Mark (come) ________ home, (switch) _________on the computer and (check) _______ his emails.
    3.    The thief (sneak) ________ into the house, (steal) _______the jewels and (leave) ________ without a trace.
    4.    Nobody (listen) ________while the teacher (explain) _________the tenses.
    5.    While we (do) _________ a sight-seeing tour, our friends (lie) ____ on the beach.
    6.    He (wake) _______ up and (look) _________ at his watch.
    7.    The receptionist (welcome) _______ the guests and (ask) ______them to fill in the form.
    8.    The car (break) _______down and we (have) __________to walk home.
    9.    The boys (swim) ______ while the girls (sunbathe) _________
    10.    My father (come) ________in, (look) _______ around and (tell) ______ me to tidy up my room.