He often_____ with his friends _____ lunchtime. [ ]
The terrible drought has captured worldwide attention. As responsible citizens, we must never ______ the terrible situation that our common home is faced with.
Some scientists think that it may take ______ years to make robots look like people, and do the same things as us.
You _________ drive on when the traffic light is red.
The car ______ my aunt bought was destroyed by her husband.[ ]