单项选择题

______ substantial layoffs, costs were reduced.

A． When
B． Because of
C． Although
D． Since
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单项选择题
Ms. Nyguen had submitted her résumé before she ______the position was filled.
A． will know
B． knows
C． has known
D． knew
单项选择题
The talks will take place ______ Brussels.
A． at
B． the
C． in
D． to
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