Portable, affordable, and stylish: personal listening devices have never been a more popular______.（）

The Museum of Natural History and Industry in Tanner, OH receives more than 40,000______each month.（）

A．visit
B．visited
C．visitors
D．visiting

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The schedule, which you will find attached,______the specific delivery dates we require.（）

A．ships
B．places
C．details
D．succeeds

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