Đáp án + giải thik hộ mik vs ạ

1.Which sentence is correct?

A. They're flying kites when they have free time

B. They fly kites when they have free time now

C. They fly kites when they are having free time.

D. They fly kites when they have free time.

2. They kept me ...... for twenty minutes

A. Wait

B. To wait

C. Waited

D. Waiting

3_ _ _ _ I met them in the streets yesterday , they were going to the cinema

4. My sister/ loves/ at night./ to watch/ the stars/

5. Lying on the sofa , you can turn on or turn off your TV by using the.....

A. Button

B. Keyboard

C.remote control

D.mouse