EX1: chia động từ thời quá khứ đơn
1. It.......(rain) a lot last week 
2.what time you..........( get) up yesterday?I .......(get) up at 6.00
3.who ........(send) this book two hors ago?
4.you.........(work) in the music room last night?
5. the skirt.........(be) dirly, so i ......... (wash) it an hors ago
6.he........(not help) this mother two days ago
7. it...........(take) you ten minutes to you this homework yesterday
8. nam.........(borrow) my book last sunday
9.i ............(not be) tired after the trip to Dalat last week 
10. where you................(spend) your holidays last year?