问题
Lots of rescue workers were working around the clock,_____ supplies to Yushu,Qinghai Provinceafter the earthquake. [ ]
A: sending
B: to send
C: having sent
D: to have sent
B: to send
C: having sent
D: to have sent
正确答案是：
同类题型
I dropped my new iPhone on the ground last night. And it doesn’t work now.— _________.
I would appreciate it ________ you call back this afternoon for the doctor’s appointment.
Leave your key with your neighbor you lock yourself out one day
With the price _______ so quickly, I find 1,000 yuan a month can hardly cover the cost of living.