第二节 语法和词汇知识 （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。
6. The house rent is expensive. I've got about half the space I had at home and I'm paying _____ here.
A. as much three times B. much as three times
C. twice times much D. three times as much
7. The main school holidays are from mid-December till early February___________ the days are long and warm.
A. when B. while C. on which D. that
8. ________________, but the question was not settled .
A. Having been discussed for a long time
B. Though it had been discussed for a long time
C. It had been discussed for a long time
D. Having discussed for a long time
