Who's the girl[ ] [ ]the sun A;is standing,under B;standing,under C;standing,in D; stood,below 必须有理由

Who's the girl[ ] [ ]the sun A;is standing,under B;standing,under C;standing,in D; stood,below 必须有理由
Who's the girl[ ] [ ]the sun
A;is standing,under B;standing,under C;standing,in D; stood,below
必须有理由

Who's the girl[ ] [ ]the sun A;is standing,under B;standing,under C;standing,in D; stood,below 必须有理由
C,动名词作状语,阳光下,一般用in,有沐浴的意思

C,in the sun,在阳光下

在阳光下