Question

–Excuse me, sir, but I don’t think you can smoke here.–Really sorry. I ______ this is a non-smo

–Excuse me, sir, but I don’t think you can smoke here.–Really sorry. I ______ this is a non-smoking area. A．don’t know B．didn’t know C．have no idea D．haven’t known

Answer 1

B

本题考查时态。根据语境可知“我不知道”指的是过去不知道，故用一般过去时。句意：——对不起，先生，我想这里你不能吸烟。——真的对不起，我不知道这是非吸烟区。