Exercise 1:
1,A
2,A
3,C
4,B
5,C
Exercise 2:
1,Does Mai go/goes
2,gives
3,don't
4,Did you eat
5,drank
6,doesn't have
7,will be
8,watched
9,didn't see
10,left
Exercise 3 :
1,She works in a large company in HCM city.
2,She is a secretary.
3,She has to speak English with her boss.
4,Yes,she can
5,She rides her motorbike to work.