The meeting was expected to start at 9 o'clock but the manager didn't turn up tw
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The meeting was expected to start at 9 o'clock but the manager didn't turn up ______ twenty minutes later.
A.before
B.until
C.after
D.since
试题答案
B
本句含到了时间状语从句，也可以看成是not…until…结构，意为“直到…才…”。句意为“直到20分钟后经理才出现”。