单项选择题

The opening ceremony is a great occasion. It is essential _______ for that.

A．for us to be prepared
B．that we are prepared
C．of us to be prepared
D．our being prepared
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单项选择题
_______ one-celled organisms, nearly all animals have a nervous system of some kind.
A．Some
B．The
C．Except for
D．De Spite
单项选择题
The team can handle whatever _______.
A．that needs handling
B．which needs handling
C．it needs handling
D．needs to be handled
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