第一部分：单项填空（共20小题，每小题1分，满分20分）
从A、B、C、D四个选项中，选出可以填入空白处的最佳选项，并在答题卡上将该项涂黑。
1. —Hi, Tom._______.
---It’s you, Mike._______.
A.I don’t know you are here. B. I don’t know you were here.
C.I didn’t know you are here. D. I didn’t know you were here.
2. I shall never forget the years ______ we spent together in the countryside with the farmers,_______ has a great effect on my life.
A. when ; who B. when ; which C. that ; which D. which ; that
