The funny things is, I can never remember him ever _____.
A:to get dirty
B:get dirty
C:getting dirty
D:being got dirty
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I work in a little room off the main entrance _____ museum, checking coats and other articles which people do not want to carry around as they tour the building.
A:to
B:of
C:at
D:for
A:developed
B:who developed
C:to be developing
D:developing it
She had waited at another museum for days and had spent all her money _____ to find Sidney.
A:tried
B:trying
C:to try
D:try
视频生命探测仪可视距离最大可达()m。
A. 6
B. 4
C. 5
D. 3