【推荐1】I heard a girl ________(sing) an English song when I passed by. (所给词的适当形式填空)

【推荐2】He accompanied her ________ (sing) on a lute­like instrument. (所给词的适当形式填空)

【推荐3】The teacher, as well as the students, ________(sing) a song when I passed by the classroom. （所给词的适当形式填空）

【推荐2】I ____________(look) at the photos on the noticeboard when I heard a voice behind me. (所给词的适当形式填空)

【推荐3】---What were you doing at 8 o'clock last night? I called you but nobody answered.
---I ________(watch) television.(所给词的适当形式填空）

【推荐1】-My friend whom you met yesterday_____________ (invite) to give a speech at the award ceremony.
-So has my sister. (所给词的适当形式填空)

【推荐2】A series of lectures _________(be) scheduled. （用所给单词适当形式填空）

【推荐3】—The tape recorder _________ (be) out of order last week.
—We _________ (have) it repaired the day before yesterday. It _________ (be) in good condition ever since. （所给词的适当形式填空）