These young trees ______(water) well every day.You needn't worry about them.
问题描述：
These young trees ______(water) well every day.You needn't worry about them.
答
答案：are watered
句子时态为一般现在时（every day 每天）,而前句中的water是动词,意思是“浇水”.
主语these young trees和动词water之间为被动关系,且these young trees为名词复数形式,所以答案是are watered.