问题
选择题
_____ we have finished the course, we shall start doing more revision work.
A．For
B．Ever since
C．Now that
D．By now
答案
答案：C
考查连词：A. For因为，一般不放在句首，B. Ever since自从C. Now that既然D. By now到现在为止，句意：既然我们已经完成了课程，我们应该多做些复习工作。选C。