---- Look! A man is cutting a tree on the moon.----It ______ be true. The teacher said there is no air on the moon.
You shouldn’t drive for more than three hours without ______ a rest.
There were few doctors, _____ he had to work very hard _____ his own.
Many people were dying ________ they didn’t get to hospital quickly enough.
________ it is over, everyone helps wash the dishes.
You __________ there in ten minutes.