1. —How do you like the book ?
—It’s quite different from ________ that I read last month .
A. the one     B. what      C. which       D. that
2. I , ________  your friend , will try my best to help you out .
A. who is     B. who am     C. who are       D. that is
3. Please put the book _______  he can easily find it .
A. in which     B. to which     C. where      D. whenever
4. __________ doesn’t wear a mask will be punished by law when going out .
A. those       B. whomever       C. whom         D. whoever
5. Mr. Green never forgot the days _________  he spent with his students .
A. \      B. on which        C. during which       D. in which
6. He has left for Wu Han ,__________ a meeting is to be held .
A. when        B. where        C. as         D. which