he has little knowledge, the old worker has a lot of experience.

　 A. Although B. Because C. If

-- Excuse me, can I interview Mr. Miller this afternoon?

-- A moment, please. Let me check 　　　　　　　　 .

A. if Mr. Miller will be free　　　　　　 B. when will Mr. Miller have time　 　

C. if Mr. Miller had an appointment D. when does Mr. Miller come back

The bus driver always says to us ,“Don’t get off________ the bus stops.”

A. when           B. while            C .until           D. if

-Do you know if we will go for a picnic this Saturday?

-I think we will if we　　　　　 any classes.

　　　 A. won ' t have B. didn’t' t have　　　　　　　

　　 C. don't have　　　　　　 　　　D. aren ' t having

 We Will go for a picnic if it_______tomorrow.

A. doesn't rain    B. wasn't rainy  

C. won't rain     D. wasn't raining

If a polar bear_____, it _____fish from the water. 

A. will be hungry; catches          B. is hungry; will catch

C. is going to be hungry; catches       D. is hungry; won’t catch

 What would happen if he ______ back home?

        A. go                   B. goes                 C. went

 ________ I was in he US, I made a lot of American friends.

A. While  B. Although  C. Unless  D. Until

—I like drinking wine. But people who drink wine aren’t allowed to drive.

—If I        you, I would give up       wine.

A. were; drinking                B. am; drinking

C. were; drink                  D. was;to drink

—I want to know when Mr. Brown will arrive.

—When he , I will tell you.

　 A. will arrive　　　　　　　 B. arrived　　　　　　　　　 C. arrives