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单项选择题

Mr. Wells, together with all the members of his family, _______for Europe this afternoon.

A．are to leave
B．are leaving
C．is leaving
D．leave
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热门试题

单项选择题What do we know about the flight

A．There will be a short delay.
B．There will be a long delay.
C．The flight has been cancelled.
D．The condition is still uncertain.

单项选择题________has contributed most to the redwoods survival.

A．Absence of natural enemies
B．Resistant bark and damp climate
C．Coastal isolation
D．Cool weather and daily fog