单项选择题

—There is a bad smell here.
—Oh, dear! I_______ the gas.（）<

A.must forget turning off
B.must forget to turn off
C.must have forgotten turning off
D.must have forgotten to turn off

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单项选择题

A、7.66%
B、12.78%
C、13.53%
D、12.55%

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二级建造师资格证不用本科能考吗。。。你考的时候难吗怎么考的

—There is a bad smell here.—Oh, dear! I_______ the gas.（）<