题目内容
I bet Mrs. Black will come to help us with the celebration if she ______ too busy tomorrow.
A.is B.will be C.won’t be D.isn’t
D
I bet Mrs.Black will come to help us with the celebration if she ________ too busy tomorrow.
A.is
B.will be
C.won’t be
D.isn’t
[ ]
I bet Mrs. Black will come to help us with the celebration if she ______ too busy
tomorrow.
A. is B. will be C. won’t be D. isn’t