—Sorry, sir. And you'll let me pay to have your jacket cleaned, won't you?

—That's all right. Coffee ________ lasting marks on clothing, I'm sure.

A．didn't leave

B．doesn't leave

C．hasn't left

D．hadn't left

把中国第一次工人运动的高潮推向顶点的是

A．上海工人罢工

B．香港海员罢工

C．天津工人罢工

D．京汉铁路工人大罢工