— I’ll come to attend your lecture at 10p.m. tomorrow.— I’m sorry, by then the lecture will have ended and I _____ my guests in my office.
People say that Vancouver is Canada’s most beautiful city, ______by mountains and the Pacific Ocean.
—Obviously, the boss looks happy again, doesn’t he? —Yes. It’s said that he has ______ the difficult problem.
A concert will be held in our city _____ the great musician.
We must do whatever we can _____ the river _____ any more.
People who want to cross Canada in less than five days forget the fact _____ Canada is 5,500 kilometers from coast to coast.