问题
选择题
16．After driving for 20 miles, Jackson realized that he______in the wrong direction.
A．was driving
B．drove
C．had been driving
D．had driven
答案
答案：C
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16．After driving for 20 miles, Jackson realized that he______in the wrong direction.
A．was driving
B．drove
C．had been driving
D．had driven
答案：C