What some people don’t realize is ________ difficult life can be after they get addicted to drugs.

I wish you’d do ______ talking and some more work. Thus things will become better.

Have you found the information about Bill Gates________ you can use for the report —Not yet. I’ll search some on the Internet.

My brother likes ping-pong. He thinks it is _________ .

16. I was speaking to Ann on the phone when suddenly we were_____