ONLY后面更的是HIM不需要倒装.
以only引导状语位于句首时候,才倒装：
Only by shouting at the top of his voice was he able to make himself heard.
Only in this way can we achieve what we want.
Only in each afternoon does the university library open.
Only under special circumstances ____to take make up tests.
A) are freshmen permitted
B) permitted are freshmen
C) freshmen are permitted
D) are permitted freshmen
Only加状语位于句首,句子用倒装语序,故答案为A.