There were four green cats in the house.(four green cats 划线）（对划线部分提问）
问题描述：
There were four green cats in the house.(four green cats 划线）（对划线部分提问）
___________ ____________ ____________in the house?
答
What was there
用过去时,在提问时不知道单数还是复数,就默认为单数.
请及时采纳,多谢!非常感谢!