It worried her a bit _________ her hair was turning grey.
Does ______ matter if he can’t arrive here on time?
—I have two tickets for the theatre on Saturday evening. Would you like to ______ me?—I’d like to, but I’m afraid I have no time.
—Look!Here comes the bus and I have to go now. Thank you for coming to see me off. —Goodbye,and______!
I know Mr. Shuili; we ______ to each other at an English lecture.
It was ______ in the exam that ______ how much time I had wasted. A. not until I failed; did I realize B. until I failed; I didn’t realize