— Cindy failed in the writing competition. She must be in a bad mood. — Let’s go and .
This is the best present that I have received.
She is sad. Why don’t you cheer her up?
--- I don’t know when ______ tomorrow.--- I will call you as soon as he ______.
The number of foreign students in China ______ increased.
Mr. Smith has taught for many years and he teaches well. All the students ______ him.