A new theory __________ before it can be put into practice.

A new theory __________ before it can be put into practice. New World Order (conspiracy theory)是什么 The professor could hardly find suffient grounds _______ his arguments in favor of the new theory.A.to be based on B.to base on C.which to base on D.on which to base为什么C选项不行?我咋觉得C D可以替换回答时尽量详细要解释另 SHANDONG UNIVERSITY COLLEGE ENGLISH TEST FOR NON-ENGLISH MAJORS OF CONTINUING EDUCATION （本科第4册18.The professor could hardly find sufficient grounds _______ his arguments in favor of the new theory.A.to be based on B.to base on C.which to ba Who put forward a theory A THEORY OF JUSTICE怎么样 a contingency theory of rhetorical How much did your new car _______?A.costB.spend your brother _______(没有)a new ping-pong bat l have a new friend _______(call)Tommy. i have a new watch .i'll show _______ I have a new book.（改为否定句）I _______ ________ a new book. 元旦是一年的开端 用英语怎么说 The New Year is _______ ______ _______ a new year We have decided to accept the proposal that he ________ his new theory.A. offer B. offers C. offered D. would offer为什么用选择A,谢谢 I didn't quite follow him ( ) he explained the theory in a way that is totally new to me.A.beforeB.because I didn't quite follow him ( ) he explained the theory in a way that is totally new to me.A.beforeB.because Alice is a new student in this school.Mike is a new student,too.(改为同义） Alice is a new student._______ _______ Mike Is there _______ in today's newspaper?A.anything new B.something new