It was in the small house ___ was built with stones by his father ___he spent his childhood .
She don't know how she ____ the first couple of months after her husband’s death.
Keep an optimistic and positive attitude — Don't put yourself to any _____
It is the idea____smiles can get rid of cold ____has been proved by the researchers many times.
After he retired, he keeps on taking exercise to kep fit______a good diet.
Passengers are ______to look out of the window when the train is moving.