Which of the following definitions are not proper.
A.Swimming is when you propel yourself through the water with parts of your body.
B.Swimming is a sport in which you propel yourself through the water with parts of your body.
C.A department store is a store where all kinds of commodities are bought.
D.A department store is a place where all kinds of commodities are bought.
正确答案：Swimming is when you propel yourself through the water with parts of your body.；A department store is a store where all kinds of commodities are bought.