–I’ve taken someone else’s green sweater by mistake.
–It Harry’s. He always wears green.
A. could be
B. will be
C. mustn’t be
D. has to be
网友回答
(答案→)A. could be
B. will be
C. mustn’t be
D. has to be
解析： 词义辨析。could be可能是；will be 将会是；mustn’t be不应该是；has to be不得不是。句意：我拿错了别人的绿色毛衣。可能是Harry的。他总是穿绿色的。所以选A。