I am going to Tian’anmen Square to watch the raising of the national flag with Lin Tao ________ it rains early tomorrow morning.

—If you have any trouble, be sure to call me. —_______. 

You should care _______ your friends when they are in a difficult situation. They need your love.

—The supermarket is crowded（拥挤的）. There are _______ people there.—Yeah, and the things there are always __________ expensive（贵的）.

—Who is playing the piano in the classroom? —_______ must be Susan. She plays the piano after school every day.