As nobody here knows what is wrong with the machine, we send for an engineer to handle the problem.
A.should
B.must
C.can
D.would
答案:B
考查情态动词。should 应该,must 必须,can 能,would 会,句意:因为在这没有人知道这台机器怎么了,我们必须派人请一个工程师来处理这个问题。所以选B。
As nobody here knows what is wrong with the machine, we send for an engineer to handle the problem.
A.should
B.must
C.can
D.would
答案:B
考查情态动词。should 应该,must 必须,can 能,would 会,句意:因为在这没有人知道这台机器怎么了,我们必须派人请一个工程师来处理这个问题。所以选B。