12 The boys are playing on the ___of the beach

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12 The boys are playing on the ___of the beach
A sand B sands C sandes D sandy 为什么选B sand 为什么要加s

sands 写成复数表示“沙滩”,而当“沙子”将时,是不可数名词；但强调各种各样的沙子时,要写成sands.如：They put sands with different colors inside a transparent bottle layer by layer.他们一层一层的把不同颜色的沙子装入透明的玻璃瓶.

12 The boys are playing on the ___of the beach The boys are playing soccer on the beach(对 are playing socce the boys are playing soccer on the playground.-------------- The boys are playing happily on the playgroung.(感叹句) Some boys ____(lie) on the beach. There are many boys playing footballs on the playground_____ There are three more boys playing basketball on the playgrou a g_____ of boys are playing football on the playground. Many people are playing games on the beach.Some are playing （）playing volleyball on the beach is! The boys are lying on the beach,with their eyes ______ some are playing beach volleyball.Some are lying on the beac