21. In her speech, she offered several  examples to suport her ideas.
    a. expelling   b. compelling   c. repelling   d. impelling

22. Mr. Chen cautioned  adopting the plan.
    a. along   b. to    c. at   d. against

23. It was such an excellent report that Mrs. Tyler  the fact that
    it had been turned in late.
    a. oversaw   b. overwhelmed   c. overruled   d. overlooked

24. She uses a time-management chart  how much time she should spend on each project.
    a. in determination   b. determines   c. to determine   d. determination of

25. Throwing litter from car is  by law.
    a. forbidding   b. prohibitted  c. inadmissible  d. permissive

解答

21. In her speech, she offered several (c) examples to suport her ideas.
    a. expelling   b. compelling   c. repelling   d. impelling

　　expel     追い出す、吐き出す、発射する、
　　compel    強制する、compelling 有無を云わせぬ、
　　repel     追い払う
　　impel     追いやる、駆り立てる、

　　-pel には「押す」の意味が含まれている。      
　
22. Mr. Chen cautioned (d) adopting the plan.
    a. along   b. to    c. at   d. against

　　caution against 49ページ

23. It was such an excellent report that Mrs. Tyler (d) the fact that
    it had been turned in late.
    a. oversaw   b. overwhelmed   c. overruled   d. overlooked

　　oversee     見張る、監督する、管理する、
　　overwhelm   圧倒する、
　　overrule    支配する、無効にする、
　　overlook    見晴らす、見落とす、

24. She uses a time-management chart (c) how much time she should spend on each project.
    a. in determination   b. determines   c. to determine   d. determination of
 
25. Throwing litter from car is (b) by law.
    a. forbidding   b. prohibited  c. inadmissible  d. permissive

    forbid, prohibit 　禁止する
　　litter       　　（名詞）ごみ、（動詞）散らかす、
　　inadmissible  　　許せない、承認しがたい
　　permissive　　    寛大過ぎる

   （ごみを車から投げ捨てることは法律で禁止されている）
　　という文です。
 　 forbid, prohibit 共に　“禁止する”ですが、
　　ここでは、「is + 過去分詞　+　by 」 の受動形です。
　　過去分詞が必要です。