What a pity my new computer doesn't work ___must be something wrong with it

问题描述:

What a pity my new computer doesn't work ___must be something wrong with it
a .this b.there c.it d.that

B
there be 句型
最简单的例子是there is an accident.
当动词前面有了情态动词如MUST,CAN,MAY等,be动词需要用原形be