If the bottle of gas fire, the whole building may
A.will catch, be burned to the ground | B.catches; be burned down |
C.is on, burn down | D.will be on; be burned down |
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If the bottle of gas fire, the whole building may
A.will catch, be burned to the ground | B.catches; be burned down |
C.is on, burn down | D.will be on; be burned down |