．—Steve e back because the window is open．
—Yes．but he left it open last night．
A. must have；might have
B. might have；can’t have
C. can have；should have
D. might；must have
网友回答
(答案→)A. must have；might have
B. might have；can’t have
C. can have；should have
D. might；must have
解析：可联系答.案.网客服索取。