1.thety don't go to school.ther parents__at work.A.aren't B.don't2.they are sitting __a tree.A.to B.under C.at D.on

问题描述:

1.thety don't go to school.ther parents__at work.A.aren't B.don't
2.they are sitting __a tree.A.to B.under C.at D.on