Are there apple?该为单数句

题目

Are there apple?该为单数句
It's too big.改为复数句
His hat is new.用old连成选择疑问
What's this It's book.中什么地方错了?
What colour is your shoes?中什么地方错了?

答案

Is there an apple?
They are too big.
Is his hat new or old?
应该为It's a book.漏了冠词.
应该为What colour are your shoes?复数用are.