单选题
The advisory committee ______ announced that up to thirty percent of the company's workforce would have to be let go.
A. regrettable B. regretfully C. regret D. regretful
A
B
C
D
【正确答案】
B
【答案解析】
[解析] 空格位于主语和动词之间,应该填入副词。
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