单项选择题

At the international conference, the famous scientist gave an excellent report（）on his recent experiment.

A．basing
B．based
C．to be based
D．to base

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I invited Tom and Ann to dinner, but（）of them came.

A．both
B．none
C．either
D．neither
单项选择题
The city's underground（）more people than the buses.

A．brings
B．carries
C．sends
D．fetches
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