Mary lives in the room, the door _____ opens east.
A. of it
B. of which
C. of that
D. whose
查看答案
The engineer _____ my father is talking has just come from abroad.
A. with whom
B. with who
C. with which
D. that
Is there anything _____ I can do for you?
A. which
B. who
C. as
D. that
This is the reason _____ they are all against the plan.
A. which
B. that
C. why
D. what
When and why he came here ________ yet.
A. is not known
B. are not known
C. has not known
D. have not known
微信支付 
支付宝支付