64 I suggest you having plenty of exerciseinstead of playing _____ day and night

_______delicious beef !—Well，you can eat more if you like it.

This is the factory　　　　my father worked ten years ago.

They were ________ busy ________ with each other ________ the time. — How cool the guys are !

Are you familiar the music? — YesThe music is very familiarme, but I can’t remember when and where I heard it