题目：
Young trees____ quite often.
A．should water
B．should be water
C．should be watered
D．watered
答案：
答案：C
题目分析：句意：小树应该常浇。这里Young trees与water之间是被动关系，结合语境可知本句中句子主语是动作对象，故用被语态，选C。
Young trees____ quite often.
A．should water
B．should be water
C．should be watered
D．watered
答案：C
题目分析：句意：小树应该常浇。这里Young trees与water之间是被动关系，结合语境可知本句中句子主语是动作对象，故用被语态，选C。
