When Edison was only a boy of thirteen, he earned a living, _____ newspapers in the street.
If you don’t like to swim,you _____ as well stay at home.
______his father came out of prison_______Dickens have a chance to go to school.
It seems cloudy, you’d better take an umbrella_____.
We ___clearing up the mess.
My luggage was closely____when I entered the country.