you must be _____(kid).There is no person in the house用适当的形式填空
问题描述：
you must be _____(kid).There is no person in the house
用适当的形式填空
答
kidding.
你一定是在开玩笑，房子里没有人。
答
you must be kidding. There is no person in the house
答
you must be (kidding).There is no person in the house.
kid无论是做及物动词还是不及物动词都有开玩笑,取消的意思.
及物动词 vt：
They kidded him about his paunch.
他们取笑他肚子大.
不及物动词 vi:
I was only kidding.
我不过是在开玩笑
答
kidding
我是英语老师，不会错的，意为我不会开玩笑（原句）。