【用this/thatis或these/thoseare填空—Who'sthis?—_________mysister.Dad,_________myfriend,David._________Jack'ssonanddaughteroverthere?Hi,Ann._________myparents.1.—Who'sthis?—_________mysister.2.Dad，_________】

　　用this/thatis或these/thoseare填空

　　—Who'sthis?

　　—_________mysister.

　　Dad,_________myfriend,David.

　　_________Jack'ssonanddaughteroverthere?

　　Hi,Ann._________myparents.

　　1.—Who'sthis?

　　—_________mysister.

　　2.Dad，_________myfriend,David.

　　3._________Jack'ssonanddaughteroverthere?

　　4.Hi，Ann._________myparents.