--- The two old friends were ______ busy ______ with each other ______ the time.--- Yes. They hadn’t met for long.
The Voice of China is very popular , lots of people love to _________ to watch it.
—Can I get my ears pierced, Mom? —No. As a student, you ________ do that.
I used to go to sleep ________ my bedroom light ________.
How do you learn English?_______.
The man is very rich, he has __________ airplane.