To those scientists, it still remains to be a question ______ man can go back to the old days with time machine.
Not a single song at yesterday’s party.
In 1636, Harvard(哈佛大学)is one of the most famous universities in the United States.
—Would you like to watch the movie with me tonight?— ,but I have too much homework to do.
— Where is my dictionary? I remember I put it here yesterday. —You it in the wrong place.
—How do you deal with the disagreement between the company and the customers? —The key_______ the problem is to _____ the needs _______by the customers.