_______ their service, the workers of the hotel are active in learning English. A. Improving B. To i...
2023-01-04 20:22:39 95次 福建省2009-2010学年高二下学期期中考试英语试题 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
_______ their service, the workers of the
hotel are active in learning English.
A.
Improving B.
To improve
C.
Improve D.
Having improved
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