单项选择题

Criticism and self-criticism is necessary ______it helps us to find and correct our mistakes.

A．by that
B．at that
C．on that
D．in that
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单项选择题
On New Year''s Eve, New York City holds an outdoor _____which attracts a crowd of a million or more people.
A．incident
B．event
C．case
D．affair
单项选择题
The bank is reported in the local newspaper______ in broad daylight yesterday.
A．being robbed
B．having been robbed
C．to have been robbed
D．robbed
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