改写句子：根据A句完成B句，使其与A句意思一致。

1.A:These are white skirts.

   B:________ ________ ________white.

2.A: Please look at the blackboard.

   B: Please________ ________ ________ ________the black board.

3.A:How much are these tomatoes?

   B:________is the________ of these tomatoes?

4. A:He often buys sweaters from the young girl.

    B: The young girl often________ sweaters ________him.

5.A:This green cap is 10 yuan.  That blue one is 10 yuan, too.

   B:This green cap is 10 yuan.  That blue one________ ________10 yuan.