Only when they were told the date of the wedding , their daughter would get married.
A. realized they
B. did they realized
C. did they realize
D. they did realize
网友回答
A. realized they
B. did they realized
(答案→)C. did they realize
D. they did realize
解析：考察only的部分倒装句式。当only放在句首且强调状语的时候，后面的主句要使用部分倒装的形式。要特别注意如果强调的不是状语则不要倒装。本句中的only放在了句首，强调的是时间状语从句when they were told the date of the wedding。故后面的主句使用部分倒装的形式。句意：只有在他们被告知女儿结婚的日期的时候，他们才意识到他们的女儿要结婚了。故C正确。