you beento the Great Wall—Perhaps notin my memory ________, it might have been during my early childhood

My mother is not in very good shape, and has _____ tennis to get fit.[ ]

He turns a deaf ear to his parents, _____ many times they have pointed out his weaknesses.[ ]

We will take the conditions into careful account______ you have attached to this contract— Thanks Hope for further cooperation

you have been to many countries, butnowhere else _____ such a beautiful palace.