I’ll keep his address _____ I need it.
You'd better ______ your expenses on clothes.
I saw her in the office this morning. She ______ back to work without the doctor’s permission.
If you cheat in the exam, you could hardly _________ it.
— Do you have the time? I've got something to tell you.— Ok, ______ you make your story short.
–— It is unwise for some people to drive and talk on a cell phone.–— _______. It's very dangerous.