单项选择题

I know nothing about his journey he was likely to be away for three weeks.

A．if
B．unless
C．until
D．except that
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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
填空题
Where did Samuel liveHe lived in .
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