① How tall is it? ____     A. Zhang Yong.

② Who is the tallest boy? ____     B. Maybe 5 metres.

③ What size are your shoes?____     C. Forty yuan.

④ How much is your T-shirt? ____     D. Size 38

⑤ How old are you?____     E. I'm fifteen years old.

______ of the floor _______ wet.

简便计算。56.5×1.25+56.5×0.75=（  ____   ）