He will come to understand your efforts sooner or later. It’s just a matter of ________.
he is well again, he can go on with his English study.
Because of the snow , many parts of the countryside are only _____ by helicopter.
Wolves would starve if food was difficult, especially during the cold winter months.
Jane seems strange, I findhard to get along with her.
—Did you ring her last night? —Yes, I her, but she wasn’t at home.