（C）many times,but he didn't lose heart.

tough ____many times,tim didn't lose heart. he tired many times ------ the right answer,but he didn't --------He tried many times () the right answer,but he didn' He isn`t lose his heart.He didn`t lose his heart.有什么区别?也就是di 1.____with so many difficulties,they didn't lose heart at al Young Disney didn’t lose ____ heart after he failed he faile ( ) many times,but he still couldn't remember . ____ many times but he still couldn't understand it （）many times,but he still could not understand it. Having been told many times,he still didn’t know how to do i I knocked at the door (l ) of times ,but he didn't hear it. A man can fail many times,but he isn`t a failure until he be