This is the very book ________ I want to read．
A.thatB.whichC.itD.with which在线课程A
解析：
解析：该句中the book为先行词，被the very修饰，故关系代词用that。先行词由序数词（all,any,the,very the first,the last,the only）、形容词（the best,the most,the highest）或被the same修饰时，其后的定语从句要用关系词that而不用which．