Three fourth of the materials I listened to in the exam____e

Three fourth of the materials I listened to in the exam____e I think three fourths of the materials I listened to at the i think of the materials i listened to at the beginning of e 求这道题选C的理由I think of the materials I listened to at the begin I think ——— of the materials I listened to at the beginning I think____of the materials I listened to at the beginning o ---I think ___of the materials I listened to at the begining l think ( ) of the materials l listened to at the beginning The parents listened to the school choir at three ten in the The students in Class Three listened ____ to the lecture giv although I have listened to the c——three times,I still do no I think three fourths_of the materials llistened to at the b