单项选择题

The professor found himself constantly ______ the question: "How could anyone do these things"

A．poring
B．pondering
C．presiding
D．presuming

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单项选择题

We had n' t met for 20 years, but I recognized her ______ I saw her.

A．the moment
B．for the moment
C．the moment when
D．at the moment when

单项选择题

Many a delegate was in favor of his proposal that a special committee______ to investigate the incident.

A．were set up
B．was set up
C．be set up
D．set up

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