It is very kind _____ you to help me with my lessons. It is difficult _____me to learn them well.
—Are you satisfied with what she has done? —Yes. It can’t be.
With time going by, we have come to realize that creativity isit takes to keep a nation highly competitive.
As we all know, , the pollution will get worse and worse.
—It is a long timeI saw you last time. —Yes. And it will be a long timewe see each other again.
many times, but he still couldn’t remember the Chinese meaning of this word.