【题目】I'll write a letter to you ________ I arrive in New York.

A．as soon as B．until C．since D．for

【题目】I asked Jim and Bob to come to my house for dinner , but ____ of them came .

A .neither B. either C.none D .both

【题目】—Did you call Jim back?

—I don't need to, ________ we'll have a meeting together tonight.

A．though B．unless C．because D．if

【题目】Many teenagers think they ____ to play computer games on weekends.

A. were allowed B. should be allowed

C. are allowed D. will be allowed

【题目】 Dr Bethune came to China ______the Chinese soldiers and gave his life to ____Chinese.

A. treated ,helped B. treating, helping

C. to treat, helping D. to treated, help

【题目】Take a map with you while traveling ________ you have a guide or know the city well．

A．since B．if C． unless D．because

【题目】Mr Smith usually reads a newspaper he’s waiting for the bus.

A. if B. the C. because D. while

【题目】I wonder if he tonight. If he , I’ll let you know.

A. will come; will come B. comes; comes

C. will come; comes D. comes; will come

【题目】We won’t put off our plan __________ it snows heavily tomorrow.

A. whether B. unless

C. because D. While

【题目】It was dark I couldn’t see anything.

A. too; to B. such; that

C. so; that D. as; as