一道高二英语选择题(请进!请详细说明!先谢谢!)

问题描述:

一道高二英语选择题(请进!请详细说明!先谢谢!)
Onlywhen _________ given specialpermission ,_________________write inpencil.
A areyou ;you mayByouare ; you may
C are you ; mayyou Dyou are;mayyou

D you are ;may you
only放在句首时,主句倒装