27. In the absence ____ necessary exercise, he can get ill easily. So he is often absent ___ class.
They ______ so tired if they ______ for a whole day.
Do you consider it any good _____ the truck again ?
If you find yourself ______ no one will help you, please call me.
— Why does the lake smell terrible? — Because large quantities of water______.
What you told me the other day is really true,_______?