英语冠词Is that ________eraser?this is _______________orange.it'

英语冠词
Is that ________eraser?
this is _______________orange.
it's_______________computer.
____________book on the desk is Tony's
look at _____________ID card
填冠词
what's this ______________Chinese?
it's a set _______________keys.
is that your pencil case _________________the lost and found case?
please call Allen___________495_3539
look __________________the blackboard,please.
填介词