（--------）apple are there on the tree?括号里填什么.

（--------）apple are there on the tree?括号里填什么. What are they( ) on the Christmas tree 括号里填什么? is there a bird（ ）the tree?括号里填in还是on? Are there a ball on the desk?yes,（ ）（ ）.括号里应该填什么 on the tree,there are two red apple. There is only ( ) apple on the table.括号里应该填an还是one?为什么? There are few apples on the tree还是There is few apple on the 括号里填介词：There are some birds ( )the tall tree. There is an apple on the tree.(改为复数） 求解释there are many apple on the tree和there are many birds in The boys and the girls are all ( )the tree.括号里填什么? People are ( )(sit) on the beach.括号里填什么