21. --Will you do me the honour of dancing with me?
--________.
A. That’s a good idea. B. I’d love to, but I have a partner.
C. It doesn’t bother me. D. It’s very kind of you.
22. Although she has lived next to us for months, we still ________ her real name.
A. hadn’t known B. didn’t know C. don’t know D. haven’t known
