从A、B、C、D四个选项中，选出可以填入空白处的最佳选项。
21. -----Did you have a good time yesterday, Jane?
-----Yes, as you know, _______party went on in _______most pleasant atmosphere.
A. the, the B. a, the C. a, a D. the, a
22. The term “weak eyesight” is misleading, _______ in near-sighted eyes the lens(水晶体) of the eye is actually too strong.
A. though B. for C. so D. unless
