一、單項選擇題

　　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

　　6.They built a highway _______ the mountains.

　　A. lead into B. to lead into C. led into D. leading into

　　7.It _______ for two hours now.

　　A. rains B. is raining C. has rained D. has been raining

　　8.The girl was lucky enough to _______ the bad men and ran away.

　　A. break away B. break away from C. break out D. break into

　　9.The policeman came up to the lonely house with the door _______， _______ there for a while and then entered it.

　　A. open; to stand B. opening; stood C. open; stood D. opened; standing

　　10._______ the new plan can be carried out will be discussed at the meeting tomorrow.

　　A. Which B. What C. That D. Whether