___ ,but he still could not understand it
___ ,but he still could not understand it
___ many times but he still could not understand it.(tell)
()many times,but he still could not understand it.
____ but he still could not understand it.
______ many times,he still could not understand it.
1.___many times,but he still couldn't understand it.
_____scores of times,but he still couldn't understand it.
____ many times but he still couldn't understand it
________many times,but he still couldn't understand it.
Then he spoke slowly, but I could not understand him
( )many times, but he still could not rem
but I (could) not understand him