单选题
Mr. Hill had no choice but to resign from the sales director position ______ sales have been on the decline over the last two years.
A、
until
B、
so that
C、
since
D、
therefore
【正确答案】
C
【答案解析】
[解析] 词汇:连词
1.空格后接句子,因此没有连接功能的D选项排除。
2.从句和主句的关系是因果关系,因此应选择连词since,意为“因为……”。
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