The fire was finally brought under control,but not
__________heavy damage had been caused.
A.before B.after C.since D.as
The fire was finally brought under control,but not
__________heavy damage had been caused.
A.before B.after C.since D.as
A
本题考查连词。before在……之前；句意：火势被控制住，但不是在造成巨大破坏之前。