Smoking is the topic（ ）we are going to talk at the meeting.
A、
about that
B、
about which
C、
with that
D、
in that
【正确答案】：B
【题目解析】：
考查定语从句的关系代词的判断和使用。
先行词指物时，用which和that，而此处关系代词在定语从句中做介词宾语，只能用which，故B选项符合题意。
句意：吸烟是我们将要在会议上谈论的话题。
Smoking is the topic（ ）we are going to talk at the meeting.
A、
B、
C、
D、
【正确答案】：B
【题目解析】：
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