补全对话 A、excuse__!do you__an eraser?B、__,l do A、 can l.__it,piease?B、 certainly.here you _

补全对话 A、excuse__!do you__an eraser?B、__,l do A、 can l.__it,piease?B、 certainly.here you _
A、thank
B、___weicome.but piease give it___soon
A、___
A、here you are,here's___eraser.thanks very much
B、not at___