单项选择题

______ he tried, he was not successful.

A．For
B．But
C．Although
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单项选择题
Father didn' t tell me when he ______. I' ll telephone you as soon as he ______.
A．would come; comes
B．comes; will come
C．comes; comes
单项选择题
Mary always got up too late, and never ______ enough time for breakfast.
A．have
B．has
C．had
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