bài 1 chia động từ 
1 . I (lose)______ my keys; I cannot remember where i last ( see)______them
2. He ( not arrive)_____when i (write)____  my last letter to you
3 The sewing machine which you (use)_______ at present (invent)______in 1830 by French
4  The door will not open unless you (push)_________it hard
5 As soon as I (have)______ enough money i, I will buy a new car
6  I (walk)______along the street wwhen i suddenly ( feel) ____something hit me in the back
7   It (be) ____cold when we ( leave)______ the house that day , and a light snow( fall)____ job in london
8 i (not see) ____Daisy for ages. When I last (see)____him,he(try)_____to find a frightend and i (start) to run
9  I sat down ant ested after they(go)___
10 Before he died , he (be) _______ill for several days
11 take these pills and you (feel)______better then, Ba
12 Ba and Phong ( know) ____ each other quite well for years
13 the Brown(travel) ____ to Asia Many Times
14 The thief (steal) the bike when Mai (look) for some books in the shop
15 John and I (be)_____pen pals for nearly three years
16 We used (write)____to each very month when we (be)______at secondary school
17 Maria(stay)_____with us at the moment. She (be)____my sister's friend