问题
选择题
Progress so far has been very good. _____, we are sure that the project will be completed on time. [ ]
A. However
B. Otherwise
C. Therefore
D. Besides
答案
答案：C
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Progress so far has been very good. _____, we are sure that the project will be completed on time. [ ]
A. However
B. Otherwise
C. Therefore
D. Besides
答案：C