A group ___ boys and girls are dancing in the park. [ ]
A. with
B. of
C. for
D. to
答案:B
一个长方形的周长为14,宽为3,则对角线的长为
— What bad weather! The wind is blowing strongly with lots of _____.
— I'm sorry to hear that.
A. sandy
B. sands
C. sand