我们应当有礼貌地和客人说话.
The guests should .
我们一直忙于准备今天的考试.
We are preparing for exam all the time.
Thanks a lot. Your (友谊) is important to me.
Can you (想象) what you will be like in ten years?
All the students are (划分) into four teams.
Many (visit) came to the hometown of the great man during the vacation.