−Where is Lucy? −She ____________ volleyball with her friends.
----What’s the matter with you and your friend? ----She looks very busy. I want to help her, but I don’t know _____.
-----The light in the office is still on. -----Oh, I forget to _____.
______ my father ______ my mother is able to drive a car. However, they are going to buy a car.
----Lucy,could you help me ______ the heavy box to my room? ----Sure, a piece of cake.
----Don’t you think ______ is necessary for friends to trust each other? ----Yes, it’s the most important.