用must, might或can't填空
(1)
The textbook be his. His name is on it.
(2)
That be Mary-she's in New York.
(3)
Li Ming get here in time, but I am not sure.
(4)
The toy be Bob's. He is the only little kid.
(5)
I can't find my pen. It be left at home.
答案: 【1】must
【1】can't
【1】might
【1】must
【1】must/might