Question

— You don’t forget when we borrowed that reference book, do you?
— I can’t remember now but ________ sometime last week?

A．might it be	B．could it be
C．could it have been	D．should it have been

Answer 1

C

考查情態(tài)動(dòng)詞。句意為“你想不起是什么時(shí)間借的那本參考書(shū)啦，對(duì)嗎？我現(xiàn)在不記得啦，可能是上周的某個(gè)時(shí)間吧。”情態(tài)動(dòng)詞+完成時(shí)態(tài)表示對(duì)過(guò)去的推測(cè).could表示可能性；should表示過(guò)去該做而沒(méi)有做的事。表示可能性的用法是高考必考點(diǎn)之一。