问题
选择题
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
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。
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