请认真阅读下面各题，从题中所给的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. He is determined and competent and intelligent as well, which is ________ it takes to become ______success.
A. that; / B. what; a C. what; / D. that; a
22. — Mum, I really think Dad should have a break and get relaxed.
— Yes. He __________ too long.
A. read B. has been reading C. had read D. is reading
23. Angela and Ajani will pick up the marriage _______ after they meet online several times, which is not sensible.
A. acquisition B. identification C. qualification D. certificate
24. -----What do you think of the film?
-----____________.I’m only too glad to see it again.
