单项选择题

—It is a long time ______ I saw you last.—Yes, and what a pity it is since it will be a long time ______ we see each other again.

A．before; since
B．since; before
C．when; when
D．since; when
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单项选择题
______ Sam was unable to support his family.
A．As out of work
B．To be out of work
C．Out of the work
D．Being out of work
单项选择题
His eyes shone brightly when he finally received the letter he ______.
A．had long been expected
B．had long been expecting
C．has long expected
D．was long expected
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