【題目】It has been long since I ______ from her last.
A.had heard
B.has heard
C.heard
D.hears

【答案】C
【解析】A. had heard過(guò)去完成時(shí)態(tài)；B. has heard現(xiàn)在完成時(shí)態(tài)；C. heard一般過(guò)去時(shí)；D. hears一般現(xiàn)在時(shí)；句意：自從上次得到她的音信后，已經(jīng)好久沒(méi)有她的消息了。在句型“It has been +時(shí)間段+since從句”中，since從句的謂語(yǔ)動(dòng)詞用一般過(guò)去時(shí)，故選C。

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