1- E

2/ What should I do ?- C  ( should + V1 )

3/ Where were they going? - G  ( Where dùng để hỏi về nơi chốn )

4/When did the film start ?- A ( When để hỏi về thời gian )

5/Why is Tessa running ? - F ( WHy dùng để hỏi vì sao )

6/ How many CDs did you buy ? - D ( How many dùng để hỏi về số lượng )

7/ Whose is that bag ? - B ( Whose dùng để hỏi về đồ vật của ai đó ) 

1.How do this camera work? => e. Here, let me show you

2.What should i do? => c.You should talk to your father

3.Where were they going? => g.Home, i think

4.When did the film start? => a. Ten minutes ago

5.Why is Tessa running? => f.Because she's late

6.How many CDs did you buy? => d.Three

7.Whose is that bag? => b. I think it's Fred's

@lekmy0307