l don't know if the boy ————( come)
l don't know if the boy ————( come)
l don't know the boy ———— the right.what about you填介词
I don t know the boy next —— the teacher.中间填什么
I don't have to introduce him to you —— you know the boy .
—Did Mary come to the party?—I don't know.She__while I was o
If l don't know if l will know anyone at the party this even
l don't know if he will come on time 同义句
I don't know if he will ___(come)back.If he___(come)please t
you don't know the answer.l don't know------
I don't know if he will come tomorrow.
I don′t know if he come this afternoon
I don't know if he ____ ( come )