— Hi, Tom. Any idea where Jane is?
— She ______ be in the classroom. I saw her there just now and she said she wouldn’t go anywhere.
A.must | B.may | C.can | D.should |
Although he knew little about the large amount of work done in the field , he succeeded ____other more well-informed experimenters failed.
A.as | B.unless | C.what | D.where |
John waited at the bus-stop for nearly half an hour _____ the bus finally arrived .
A.when | B.as | C.before | D.while |
Not that I’m unwilling to lend you a hand , ____I’m too busy for the moment .
A.because | B.but that | C.but | D.however |
Jack had traveled six miles across the Channel _____his engine failed and was forced to land on the sea .
A.when | B.until | C.after | D.since |
—When did he leave the classroom?
—He left _____you turned back to write on the blackboard.
A.the minute | B.the time | C.until | D.before |