Question

23.He hurried to the booking office only_____that all the tickets had been sold out.

选Donly前最好加一个逗号，后面动词的过去分词+后面部分在这里作状语，因为是被告知，所以选told.选B
only to do 强调的是结果怎么样
选B而不选A是因为人是被告知的，所以用被动. 好多人的答案不一样啊，到底怎样解释的...来个高手啊....

Answer 1

only和不定式连用常构成结果状语，表示与预料相反的结果，意思是“竟然……、结果……”。only to be told.

Answer 2

应该是only to be told 吧 这里用only to do sth是强调结果的 be told 因为是被告知，所以要用被动啊

Answer 3

to find