用am,is,are填空.
1.Excuseme!______thisyoureraser?
2.What______those?______theybirds?
3.This______hisruler.Where______myruler?
4.I______inClassThree.______youinClassThree,too?
5.______theseherEnglishbooks?
6.Those______theirapples.Where______hisapples?
7.She______eleven.Howold______thatboy?
8.He______myfriend.______yourfriendaboyoragirl?
9.______thosemaps?No,they______not.They______pictures.
10.These______yourbananas.Hereyou______.