2. 外语
  3. My wallet is nowhere to be found. I______when I was on the bus.

My wallet is nowhere to be found. I______when I was on the bus.

admin2019-05-15  36
问题 My wallet is nowhere to be found. I______when I was on the bus.
选项 A、must drop it
B、should have dropped it
C、must have dropped it
D、had dropped it
答案C
解析 本题考查情态动词的特殊用法。句意：我的钱包找不到了，肯定是我在坐公交车的时候把它弄丢了。must drop it“一定丢了”，是对现在的猜测；should have dropped it“应该已经丢了”，不符合语境；had dropped it“以前丢了”，是过去完成时，不符合语境：must have dropped it“一定是丢了”，是对过去发生的事情的肯定猜测，符合句意，故本题选C。
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