1._______ at all is worth doing well.
A. Whatever is worth doing B. That is worth doing C. What is worth doing it D. Whatever is worth doing it
2.He bought a house for his children ________.
A. lived in B. to live in C. lived D. to live
3.By the middle of the 21st century，the vast majority of the world‘s population will be living in cities _______ in the country.?
A. other than B. more than C. better than D. rather than
4.People appreciate _______ with him because he is knowledgeable and humorous.
A. talking B. talked C. talk D. to talk
5.Imports will be allowed in proportion _______ exports.
A. to B. for C. out D. of
参考答案：
1.正确答案：A答案解析：句意为“凡是值的做的，就值得好好去做。”本题注意的是：这个句型中的动名词是用主动形式表示被动意义。
2.正确答案：B答案解析：本题属于动词不定式复合结构做后置定语。in不可省略。句意：他买了一套房子给孩子们住。
3.正确答案：D答案解析：本题考查词组辨析。rather than：与其…(不如);不是…(而是)。句意：到二十一世纪中叶，世界上大多数人口将生活在城市而不是农村。
4.正确答案：A答案解析：appreciate doing sth. 愿意，喜欢做某事。句意：人们喜欢同他交谈是因为他既博学又幽默。
5.正确答案：A答案解析：in proportion to：按…的比例，与…成正比。
