2. 职称英语
  3. -- There is a bad smell here. -- Oh, dear! I ______ the gas.A、must forget turnin

-- There is a bad smell here. -- Oh, dear! I ______ the gas.A、must forget turnin

游客2025-07-29  1
问题 -- There is a bad smell here. -- Oh, dear! I ______ the gas.
选项 A、must forget turning off
B、must forget to turn off
C、must have forgotten turning off
D、must have forgotten to turn off
答案 D
解析 推测已经发生过的事情，用 must have done。forget to do sth．表示忘记去做某事(事情没有做)；forget doing sth．表示忘记做过某事(事情已做)。第一句指出，“这里有一股难闻的气味”，由此推知，“我”一定是“忘了”关煤气了。
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