从A、B、C、D四个选项中，选出可以填入空白处的最佳选项，并在答题卡上将该项涂黑。
21．---How are you getting on with your cleaning? Do you need any help?
---____, but I think I am all right.
A. No, thanks B. That’s Ok
C. You are helpful D. That’s very kind of you
22．This painting of his has been ___ by some famous experts.
A. highly thought of B. poor thought of
C. high thought of D. good thought of
