Question

–Whose notebook is this? Is it Julie’s?
–It _________be hers, she has gone to Beijing.
A. must                 B. mustn’t                 C. can’t

Answer 1

C

考查情态动词。对某事的否定推测，用 can’t 。---这是谁的笔记本？是Julie’s吗？------它不可能是她的，她去了北京。故选C。