Which subject is the most d____ to learn?

Which subject do you think is the most interesting? Which subject is the most d____ to learn? This is the best book that there is on the subject可以解释一下这个句子吗,新原题是This is the best book------- on the subject.A.which there is B.that there is C.which is D.what is Which is your favourite subject?回答 which is your favourite subject,下一句怎么说 The subject ________ I am most interested is English.A.in that B.that C.in which D.which ( ) —_______ is Millie's favourite , Tom? —Ch( ) —_______ is Millie's favourite , Tom? —Chinese. A. Which subjects B. Which of the subject C. Which subject D. Which of subjects The subject which he is interested is English.分析本句定语从句是什么,is English的成分是什么? 以下句子which是不是引导宾语从句?为什么用which?The ideal intellectual history is judged by the wisdom with which it places that subject in history. 是what is your favorite subject?还是which is your favorite subject? ___________ the most important subject?-----English A Do you think which is B Which do you think is书上答案是B,但我感觉不大对, 13. This is one of the best books ______ ever been written on the subject.A) which has B) which have C) that has D) that have Which is your favourite subject?改成同义句! which is you favorite subjects?subject要复数吗 Which is your favorite subject?Chinese?Math?(改为选择疑问句）Which is your favorite subject,________ ________ ______ The English subject,__I have mastered well,is important in middle school.A./ B.at which C.that D.in which honor is the subject of my story The subject of life is making choice