Ex2 :
1 What
2 Which
3 Why(mình ko chắc lắm đôu)
4What time
5 How often
6 Who
7What time
8 Where
9 What
10 What
Ex3 :
1 B
2 D
3 A
4 B
5 A
6 D
7 B
8 C
9 C
10 B
1- What
2 -Which
3- Why
4. When/What time
5. How often
6. Who
7. When / What time
8. Where
9 .What
10 .What
Ex3 :
1-B
2 -D
3 -A
4- B
5- A
6 -D
7 -B
8 -C
9 -C
10 -B