1.There are some children( B)over there?
A.plant trees B.planting trees C.to plant trees D.plants trees
现在分词修饰children,表示主动及正在进行.
2.Please pass the teachers(B )cups of tea.
A.theirs B.their C.them D.they
这里pass后接双宾语,一个是人the teachers,一个是物their cups of tea.their这里要修饰cups,所以不能用宾格等其他形式.
3.the girls each ( A)some cards.
A.has B.have C.there is D.there are
这里的主语是人,不能用there is 或there are, each是单数,后面接动词have的单数形式has