The contract is very important for both of you, so studying it ________before signing is necessary.

A．in return

B．in exchange

C．in detail

D．in turn

阅读《宝玉挨打》中的一段文字，然后回答下列小题：
“早听人一句话，也不至有今日!别说老太太、太太心疼，就是我们看着，心里也——”刚说了半句又忙咽住，不觉眼圈微红，双腮带赤，低头不语了。