The fire, believed todue to illegal cons
问题:
The fire, believed to due to illegal construction on the building’s roof, was brought under control after an hour.
A.have occurred
B.occur
C.have been occurring
D.be occurring
The fire, believed to due to illegal construction on the building’s roof, was brought under control after an hour.
A.have occurred
B.occur
C.have been occurring
D.be occurring