- Did you know that David injured his leg yesterday?- Really? _______A.Who did that?B.Wh

听力原文：M: Did you hear that Mike had his arm broken？W: Yes. He was injured in a car acci

— Mike injured his leg playing football yesterday.— Really？ _____A、Who did that？B、What’

Did you know that a task thats interrupted （1)_____ 50% longer and has 50% more mistakes t

Speaker A: Did she really use to be very thin？ Speaker B: ______A．How do you know that？B．Y

Why did you do that?Have you gone insane?

Did you know that all human beings have a comfort zone regulating the distance they stan