1.The subject of "What is interesting is that I do not even

1.The subject of "What is interesting is that I do not even know him."is__________.A.what B.intertingC.What is interestingD.I
2.__________I think he is charles.
A.who do you think he is
B.Do you think who he is
C.whom do you think he is
3.he did not know which room__________.
A.they lived
B.they lived in
C.did they live
D.did they live in
第二题到底选什么啊