—Sorry, sir. I can’t answer this question. ---Well, you are supposed______ this part of history.
I found a bucket, ______ it in the sink and turned the tap on.
Li Lei ______ English when he was in Canada. Now he can speak it freely.
He goes back home to see his parents ______ few weeks.
—Excuse me. Is this the right way to the Summer Palace? —Sorry, I am not sure, but it ____ be.
They looked at each other, ______.