---Why did you e late this morning?---We were ______ for half an hour in the traffic jam.A.taken upB.given upC.held upD.put up
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C解析此题关键在于把握几个短语动词的意义。take up意为“拿起，占用（空间）”；give up意为“放弃”；hold up意为“举起，耽误，使停止”；put up意为“举起，张贴，搭起，提高”。此题答句意为“由于交通阻塞，我们耽误了半个小时”。