Walmart,which is one of the largest American supermarket chains,________ some of its stores open 24 hours on Mondays through Saturdays.(2012·安徽)
He _______a good idea finally.
——Ann is in hospital. ——Oh, really? I_______ know. I_______ go and visit her.
_______ is important for us to learn English well.
My father used _______in front of his house and he got used to _______like that.
Rather than _______on a crowded bus, he always prefers _______a bicycle.