I listened but couldn't hear anything.listen和hear为什么这么变

I listened but----------(hear) nothing. He listened but could hear nothing.He listened but could hear nothing. 找错i heard but i listened nothing I listened carefully but I heard We-----but could------nothing.A.listen;hear B.listened;heard C.listen;heard D.listened;hear 1.___ is important for all of us to take exercise.A.This B.That C.It D.One2.I ___ carefully,but I could ___ nothing strangeA.heard,listen B.listened,listenC.listened,hear D.heard,hear listen hear用法I ————but————nothing.A listened,listenedB listened to,listened toC listened ,heardD heard to,listened I listened carefully but I heard anything.（改错） I listened carefull ,but I heard ______(something) I _____ but _____nothing.A.was listened;was hearing B.listened;heard C.have listened;heardD.listend;head of I listened carefully but I couldn't hear anything（同义句转换）I listened carefully but ______to hear_____ 英语翻译I listened through curiosity to the discourse of these little creatures; but as they,in their national vivacity ,spoke three or four together,I could make but little of their conversation.求熟谙英语语言文学的高手解答 He listened carefully ,but he could ( ) nothing A sound B feel C see D hear He listened carefully but he could not hear his teacher clearly.怎么翻译 I ___ carefully but i ___ nothing.A hear,listen B listens,hear C heard,listened D listened,heard ---Listen!---I ____ but I ____ anything unusual!A.listened;haven't B.have listened:didn't hear I ______ but I didn't________ anything.A.listened ,listen to B.heard ,listen toC.listened,hear D.listened to ,hear I listened but heard nothing.这句话中 but heard nothing应该不是宾语从句吧?