Progress so far very good and we are sure that the work will be finished on time
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Progress _____ so far very good and we are sure that the work will be finished on time.
A.was
B.had been
C.has been
D.will be
试题答案
C
根据居中提示词so far可判断用现在完成时。句意为：到目前为止进展很顺利，我们肯定会按时完成。