【題目】— Excuse me, sir. I'm afraid you can't smoke here. This is non-smoking area.
—Oh, sorry. I ____________ the sign.
A.don't see
B.didn't see
C.didn't saw
D.saw

【答案】B
【解析】句意:--打擾一下,先生?峙履悴荒茉谶@兒吸煙。這里是無(wú)煙區(qū)。--哦,真抱歉,我沒(méi)看見(jiàn)指示牌。結(jié)合語(yǔ)境,推知對(duì)話(huà)發(fā)生在現(xiàn)在,而沒(méi)看見(jiàn)標(biāo)識(shí)牌是發(fā)生在過(guò)去,應(yīng)該使用一般過(guò)去時(shí)態(tài)。根據(jù)句意及結(jié)構(gòu),故選B。

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