题组A
1. —John has put forward _______ most challenging question for us to answer.
—Yes, it really is. I have never heard _______ harder one.
A. the; 不填 B. 不填; the C. the; the D. a; a
2. ---- Do you know his address？
---- No, I also wish I _____ where he _____.
A. knew, lived B. knew, lives C. know, lives D. know, lived
