I 've told him several times but he ____ doesn't understand

I 've told him several times but he ____ doesn't understand i've told him several times but he____doesn't understand I told him many times but he failed ( )(understand)it. Told several times, he couldn't understand what I meant. 为什么 i told him many times but he failed _____（understand) it. ____ many times but he still couldn't understand it TEST SIX 7.hedoesn’t know the answer I’ve told him several t he had been told many times but he still couldn't understand This is_____film I've told you about several times. ___ several times,but he still doesn't know how to use the c 英语19.I have read the material several times but it doesn’t m I know him but he doesn’t know ( ) (I)