Question

【題目】The telephone has been ringing for two minutes before it

A.had answeredB.was answeredC.answeredD.was answering

Answer 1

【答案】B

【解析】

句意：電話(huà)響了兩分鐘才有人接。

A. had answered已經(jīng)接了，過(guò)去完成時(shí)，B. was answered被接，被動(dòng)語(yǔ)態(tài)，C. answered接，過(guò)去時(shí)，D. was answering正在接，過(guò)去進(jìn)行時(shí)。根據(jù)has been ringing可知，answer發(fā)生在兩分鐘以前，本題應(yīng)該用過(guò)去時(shí)，主語(yǔ)it和answer是被動(dòng)關(guān)系，故選B。