cho dạng đúng cùa động từ( bài tập về thì quá khứ hoàn thành và quá khứ đơn)

Here are the correct forms of the verbs for your exercise: 1) Before 2024, Mrs. Nga **had taught** chemistry at this university. 2) Jill **had phoned** Dad at work before she **left** for her trip. 3) They **had ridden** their bikes before they **met** their friends. 4) When she **arrived**, the match **had already started**. 5) After Eric **had made** breakfast, he **phoned** his friend. 6) After the man **came** home, he **fed** the cat. 7) Before he **sang** a song, he **had played** the guitar. 8) Susan **turned on** the radio after she **had washed** the dishes. 9) She **watched** a video after the children **had gone** to bed. 10) After Fred **had spent** his holiday in Italy, he **wanted** to learn Italian.