I
1 D
2 C
3 B
4 A
5 B
II
1 How does Mr. Hai travel to work?
2 What do they often do in the summer?
3 What does your mother need ?
4 Where does Jane's sister works?
5 When do these students have English?
III
1 is singing
2 watches
3 Did - work
5 won't eat
6 speak
IV
1 buying => to buy
2 goes shopping always => always goes shopping
3 in => for
4 breads => bread
5 the => of the
V
1 river
2 afternoon
3 work
4 fishes
5 There
6 people
7 too
8 hours
9 sometimes
10 because
VI
1 My sister often goes to the supermarket on foot
2 Are there 50 students in your class?