We live day by day, but in the great things, the time of days and weeks _____ so small that a day isunimportant.

five days’ climbing in the mountain,they reached ____ they thought was theplace they’d been dreaming of.

He often drinks two cups of ______ water when he comes back.

still smokeheavily — No In fact, it is two yearssince I ____

17It’s known that taking exercise______your health