问题
Have you been to the Great Wall?– Perhaps not in my memory. _______, it might have been during my early childhood.
A:If any
B:If ever
C:If once
D:If not
B:If ever
C:If once
D:If not
正确答案是：
同类题型
She ____ necklaces with the help of Ms Sullivan whenshe ____ that she had made some mistakes.
The old worker insisted that he old, and back to working post again
It may rain, but________I shall go out I’ll go to the airport to see Xiao Lin off [ ]
16.Nobody knows who is the first one to add fertilizer ___ the soil to make plants grow better