They ________ to enter the building by t
题型:选择题
问题:
They ________ to enter the building by the back door; however, the front door was locked.
A.are supposed
B.aren’t supposed
C.weren’t supposed
D.were supposed
They ________ to enter the building by the back door; however, the front door was locked.
A.are supposed
B.aren’t supposed
C.weren’t supposed
D.were supposed