Ex1; 1.a/2.c/3.a/4.c
Ex2; 1a/2d/3c/4b/5b/6c/7c/8b
Ex3; 1 travels/went
2 did/go/will visit
3moved
4is singing
Ex4
1What would you like to see?
2What about going fishing
3.i should go to the dentist
4Why didn't Lan go to school yesterday
vote cho mik thì mik lm nốt bài cuối ^^