单选题：He__________into the office building when thefire bell rang.

题目内容：

He__________into the office building when thefire bell rang. A．goes
B．has gone
C．was going

参考答案：

答案解析：

What happened to the man?

What happened to the man?A．He passed the exam． B．He failed the exam． C．He will p

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分类：公共英语一级题型：单选题

If there were no greenhouse effect，________． A．earth would be thirty degrees c

分类：公共英语一级题型：单选题

People in the planecall__________． A．have a good sleep B．have some small gifts C

分类：公共英语一级题型：单选题

分类：公共英语一级题型：单选题