题目内容
Large quantities of water _________ into the machine to cool it down.
[ ]
A.are pouring
B.is pouring
C.is being poured
D.are being poured
答案:D
解析:
解析:
|
此处谓语动词的单复数要看量词quantity的形式来定。 |
练习册系列答案
相关题目