Lots of rescue workers were working around the clock, _______ supplies toYushu, Qinghai Province after the earthquake.( )
A. sending B. to send C. having sent D. to have sent
Lots of rescue workers were working around the clock, _______ supplies toYushu, Qinghai Province after the earthquake.( )
A. sending B. to send C. having sent D. to have sent
A
表示伴随。从 “were working” 可以判断是进行时态,排除C。