4 Tick and write. 勾出你想买的水果，再写一写。

a. —How much is a/an ?
—It's yuan.
b. —How much are the ?
—They're yuan.
Word list
apple orange grapes
grapefruit bananas
one two
seven ten eleven

（因题目要求勾出想买的水果，不同选择对应不同答案，此处以选择苹果和香蕉为例）
a. apple; two
b. bananas; seven