The World War II made ______ impossible for Einstein to go on with his research.
--- Cindy, you haven’t lost the ticket, have you ? --- ______. I know it’s not easy to get another one at the moment.
No chicken or duck ______ in the supermarket since the first case of H7N9 was reported dead.
Listening to music is a good way to help us get some ______ from work pressure.
---Irene, do you really want to go out? ---It may rain. ________, I will go out; I don’t mind the rain.
I don’t think I can understand this book. The subject it deals with is not familiar ______ me.