their可以看出來(lái)是復(fù)數(shù)的,排除A.
C 本身是錯(cuò)誤的,D dog 不用復(fù)數(shù)
B指的是兩只狗,一只白的, 一只黑的
I keep __ ,and I'm often worried about their food.A ,a black-and-white dog B,a black and
I keep __ ,and I'm often worried about their food.A ,a black-and-white dog B,a black and
I keep __ ,and I'm often worried about their food.
A ,a black-and-white dog
B,a black and a white dog
C,a black and white dog
D,a black and a white dogs
I keep __ ,and I'm often worried about their food.
A ,a black-and-white dog
B,a black and a white dog
C,a black and white dog
D,a black and a white dogs
英語(yǔ)人氣：516 ℃時(shí)間：2020-02-12 13:06:22
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