21. Although tea drinking is a considerable custom in the Far East, this custom first
A B C
reached Europe for the first time during the 17th century.
D
答案： Ｄ
解析： 去掉for the first time； 時間狀語重復應用，注意前面的this custom first…。
22. The reason he has made such great progress in English is because he has never
A B C D
wasted his time.
答案： D
解析： Because 改為 that，這是一個賓語從句。
23. The dentist said that if my tooth went worse I should have to have it pull out.
A B C D
答案： D
解析： pull改為pulled；have sth done 使…被…，表示這件事兒是讓別人去做的，故動詞用過去分詞形式，表被動。
24. I object to war not because it ruins the economics but that it seems inhuman.
A B C D
答案： C
解析： but that 改為 but because；注意與前面一句的關系.
25. The matter that you were arguing about last night has settled.
A B C D
答案： D
解析： has settled 改為 has been settled.
