用所给的单词填写适当形式
1.our theacher never gets with us.She is always_______(friend)to us.
2.keep these books on the shelf.They are very ______(help)to us.
3.she is very happy that she has made many good_____(friend).
4.this is not _____(she)cat.____(she)is under the chair.
5Iam _____(they)teacher .Ilike to teach ____（they )art very much.