Although you have lots of difficulties, you must your work.
—How do you usually go to work? —On foot. Walking is much__________than driving during the heavy traffic time.
—__________ does he want to be when he __________ ? —He wants to be a computer programmer.
I can’t stand ________ TV for a long time.
------It’s getting cold. Would you mind _________ the window? ------Of course not.
Parents play a role in _________their children.