---Why are you still here? It's so late.---Because I my work. Don't worry. It's almost done.
Don’t make Tom ____ the work by himself because he isn’t _______.
His father worked for _______ after twelve o’clock.
Although he is very old, ______ he works very hard.
We decided ______at home _____ the bad weather..
—____ do you exercise?—Four times a week