I’ve listened to Professor Smith’s talk about medicine,but I still haven’t got a good understanding of its key _________.
His parents decided that, with two children _________, they would open a restaurant.
It was the second time that I ______to Shanghai.
______I always felt I would pass the exam, I never thought I would get an A. A. Once B. While C. If D. Until
It may rain hard this weekend, _____________the football match will have to be put off till next week.
— I'm sorry. I thought the remark would amuse you. — It.