simple present tense change the following sentences into negative.
1.you rae a good friend .(be)
2.i am very happy today .(be)
3.annettle is tired .(be)
4.bill and peter have a great teacher .(have)
5.the car has air conditioning .(have)
6.she always goes to the park after school.(go)
7.the pupils always listen to the teacher .(listen)
再改正一下：1.you are a good friend .(be)