The country has already sent up three unmanned spacecraft, the most recent at the end of last March.
Before testing this method on patients, Dr. Baker had tests for two years on three hundred dogs.
If you like, ____ at any time.
George’s mother had thought it would be good for his character to _______ from home and earn some money on his own.
Ugly papers sold on streets are another problem of pollution. Young readers should _____ them.
Both the man and his horse ________ after the long ride.