who is the girl standing over there?Well,if you ()know ,her name is Sun Yanga mayb can c shalld must为什么选D

问题描述:

who is the girl standing over there?Well,if you ()know ,her name is Sun Yang
a may
b can
c shall
d must
为什么选D

此题应该选D
if you must know是“如果你一定要知道”的意思
而不应该选C
shall 与二、三人称连用是“允许、警告、命令”的意思.