单选题
He opened the door and let himself in quietly ( )not to wake the family.
A、
because
B、
so as
C、
so that
D、
despite
【正确答案】
B
【答案解析】
本题考查不定式作目的状语的用法。so as to do sth.和SO that+句子都可以作目的状语。
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