一般现在时描述自然过程 — 英语选择题
题目
水在自然中不断循环。下列哪一项用一般现在时正确描述了水循环中的一个环节？（ ）
A. Water is turning into vapour when the sun shines on it every day.
B. The vapour goes up high in the sky and becomes clouds.
C. Last week, the rain fell down from the clouds into the river.
D. The clouds are going to drop rain on the mountain tomorrow.