Not until the mid-term approached ____________ how much time I had wasted.
_____ do you see your grandparents?— Once a month.[ ]
How are you feeling here? — It’s quite hot. I don’t know _____ to go or stay.
Betty is busy all day. She has ______ free time than I.
Do you have any idea what Paul does all day?—As I know,he spends at least as much time playing as he______.