—it be Tom that stole the manager's mobile phone?—No.As far as I know Tom is very honest

问题补充：

—it be Tom that stole the managers mobile phone?

—No.As far as I know, Tom is very honest.

A. May

B. Can

C. Must

D. Should

答案：

A. May

(答案→)B. Can

C. Must

D. Should

解析：考查情态动词表示推测的用法。can可用于否定句或疑问句中表示推测；must表推测时一般用于肯定的陈述句；may和should表推测时不用于疑问句。根据语境可知，B项正确。句意：——有可能是Tom偷了经理的手机吗？——不可能。就我所知，汤姆是非常诚实的。