1.how is going with you?
2.We must study hard .
3.please take a message to your father that he must come to school for his son's sake.
4.The teacher tells us not to spit on the ground.
5.please call me back when you are free.
6.Do it right now!
7.My father talked with the teacher about my grades on the phone.
8.we family go on a picnic in the weather of full sunshine.
9.we really have a great time going on a picnic.
10.we have fun telling a joke by turns.
11.We learned not to lie from the story.
12.The teacher visits me on sunday.
13.It is important to learn English.
14.we go on a vacation on the Labour's day.
15.please write to me when you get the meassage.
望采纳,谢谢.