21. How dangerous! Your car might have fallen off the bridge, but you ______ lucky, indeed.

   A. are               B. were             C. have been            D. had been

22. I would wear ______ unique green hair when I was in my twenties.

   A. a             B. an               C. the              D. /

23. I don’t really work here; I ______ until the new secretary arrives.

   A. just help out                         B. have just helped out

C. am just helping out                   D. will just help out

24. To our surprise, all villagers stood at a ______ distance from the visiting medical team.

A. respectful        B. respected            C. respectable          D. respective

25. This is a course ______ to people of all ages.

   A. matching          B. suited           C. suitable         D. fit

26. The book, the cover ______ is missing, dates back to the Qing Dynasty.

   A. whose         B. of it                C. that             D. of which