last month l visited the People's Great Hall,in which many important meetings----every year.

last month l visited the People's Great Hall,in which many important meetings----every year.
Awere held Bwas held C are held D will be held
英语人气:696 ℃时间:2020-03-29 01:00:28
优质解答
C 主语是meetings,复数,谓语也用复数,后面的every year说明是一般情况,所以用are
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