单项选择题

Living in the desert of Africa has its problems;（）obtaining fresh water is not the least.

A．with which.
B．for which
C．of which
D．which

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Tom and Lily have arrived, but（）students of the class are not here yet.

A．other
B．others
C．the other
D．the others
单项选择题
This is just the place（）I am longing to visit in my holidays with my dearest friends.

A．that
B．where
C．in which
D．to where
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