从A、B、C、D四个选项中，选出可以填入空白处的最佳选项，并涂在答题卡上。
21. ------_________________?
------ He is handsome, kind and honest.
A. What is Tom? B. What does Tom look like?
C. What is Tom like? D. What does Tom like?
22. _________ we went to see him, he _________ his research work.
A. The last time; devoted to B. Whenever; was busy to do
C. For the first time; was lost in D. Each time; was deep in
