—Why can't you go with me to the National Museum?
—I ___________ an essay all the morning and haven't finished yet.
A. write B. had written
C. will write D. have been writing
Maria has written two novels, both of ________ have been made into television series.
A. them B. that C. which D. what
11. It was when I got back to my apartment ______ I first came across my new neighbors.
A. who B. where
C. which D. that
（题文）We climbed up to the top of a hill,___________ we got a good view of the whole forest park.
A. which B. where
C. when D. that
__________ Beijing Opera to the basic education in China is a big step to promote traditional art.
A. Adding B. Added
C. Add D. Having added
_____ there is still a long way to go, we believe that the doctor-patient relationship in China is gradually improving.
A. Because B. Unless
C. Although D. Once
