I tried hard ,but I couldn't find the ( )to the problemA solution B help C reply D demand

I've tried hard,but I guess I gotta try i tried so hard 求 I've tried hard, but I guess I gotta try harder 是什么意思 I tried 什么意思I tried so hard。 i tried but got nothing. I tried hard ,but I couldn't find the ( )to the problemA solution B help C reply D demand 12.but now no matter how hard I tried,he never seemed happy with me.翻译及用法 however hard I tried解释为什么这样用 i tried ____ (open ) the door ,but i failed . I tried very hard to explain my plan,but I found it difficult____.A.to make myself understandingBto make myself understoodCto understand myself Dmake myself understand I tried very hard to persuade him to join our group but I met with a flat refusal .求翻译,句中有那些语法和语句? ______,I could not memorize the long wordsA.However hard did I try B.However hard I tried C.No matter how I tried hard D.No matter how I had tried hard麻烦你了 I tried to be perfect,but nothing was worth it. I tried knocking at the front door but nobody ___it I had tried everything,but it made a little use. 改错句子I tried getting the material,but failed I tried to make Kate____her mind,but i found it hard.Well,I saw you__that when i went past.a.change,do b.changes,doing c.to change,do d.change ,doing Although math diffcult,but I study hard