1.       What can we know about vitamins?

[A] They are presents from someone.

[B] They are offered free now.

[C] They are on sale now.

2. How is the man getting to work?

[A] By bike                [B] By bus                 [C] By car

3.Why does the man want to keep the door shut?

[A] He is ill.

[B] He want to open it himself.

[C] The air inside is fresh enough.