Enough sleep is good for teenagers. — Quite right. If you for your favorite TV programs, you will feel sleepy.

How long ________they_________? —Sorry, I don’t know. But I know that Mr. Chen is going to _______a nurse next month.

Please take the bag __________ Kate.[ ]

I don’t know____. But I know ______name.

The problem of the global warming is serious, ________,the sea levels have risen a little.