“We haven’t enough books for . Some of you will have to share , ” the teacher said to the students .

After several sleepless nights, Mr. Smith ______ a perfect solution to the problems.

You had better not keep the window open , ____ ?

Have you heard that he was admitted into BeijingUniversity—Is that true And I’m glad that his efforts at last___．

er you ________ a present, you should think about it from the receiver’s point of view.