I know this design is far from perfect, but I just can't think of_______ one.
Though it was very late, they __________their discussion.
----I am going to Qingdao and stay there for a week. ----______ you are there, would you please buy some books for me?
-- Are you _______ American or English? -- English. We both work in Shanghai.
– Were you late for work yesterday morning? – Yes. By the time I got to the bus stop, the early bus . A. has already left B. is already left C. had already left
My father went to the post office to pick up the letter____.