______ the smoke come out of the buildin
题型:选择题
问题:
______ the smoke come out of the building, my first thought was to call the fire department.[ ]
A. Having seen
B. When seeing
C. When I saw
D. Seeing
______ the smoke come out of the building, my first thought was to call the fire department.[ ]
A. Having seen
B. When seeing
C. When I saw
D. Seeing