１.I have kept the books for 3 weeks.I___them to the library last week.a.ought to have returnedb.ought to return ould returnd.ought have returned 我選的是C，正確答案是A．為什么？2.It'll make me ___if you'll accept it. happily happy ch happiness ch happily 正確答案是Ｂ．為什么？

熱心網友

1 虛擬語氣　　意思是我本來應該上個星期還的　２make　sb　happy　　固定搭配