—She may not be free today.
— , we’ll have to put the meeting off.
A. If may
B. If not
C. If she may not
D. If she may not be free today.
网友回答
A. If may
B. If not
C. If she may not
D. If she may not be free today.
解析：答语的前半部分的完整回答应是：If she is not free today.