Exercise 4: Put the verbs in brackets in the simple or the past continuous tense.
(Chia động từ trong ngoặc ở thì quá khứ đơn hoặc thì quá khứ tiếp diễn.)
 
16. At this time last year, they (build)______ his house.
 
17. I (drive)________my car very fast when you called me.
 
18. I (chat)_______with my friends while my teacher (teach)______the lesson yesterday.
 
19. My father (watch)______ TV when I got home.
 
20. At this time yesterday, I (prepare)______ for my son's birthday party.
 
21. What you (do) _______at 8 pm yesterday?
 
22. Where you (go)_______ when I saw you last weekend?
 
23. They (not go) ________to school when I met them yesterday.
 
24. My mother (not do) ________the housework when my father came home.
***( giải chi tiết thì gì giúp mình )****