Nancywassurprisedthattheyhave（），Theyseemedtobeahappycouple.
A、splitupA
「句意」 南希对他们的离婚表示十分惊讶，因为他们似乎是一对快乐的夫妇。
「难点」 split up 意为“分裂，离婚” ; break down 意为“(精神方面)垮掉; (健康)变得衰弱;崩溃“; fall through 意为”失败;成为泡影“;knock out 意为”使筋疲力尽“。
ProfessorJohnsonissaid_____somesignificantadvanceinhisresearchinthepastyears.
Ifasubstanceisdissolvedinwaterorheated，itmay（）agas.
Breadandbutter____likedbyWesterners.
It was recommended that passengers _____ smoke during the flight.
Even if his letter（） tomorrow ，it（） too late to do anything.
