----It looks heavy. Can I give you a hand? ----_______.
He is believed____________ in at his office on his way home.
The boss____________ the worker how to do it, or the accident couldn't have happened.
She liked the dictionary so much that she would like to take it ____________ it cost.
Don't be joking. It's time to____________ your business.
It may not rain, but you had better take an umbrella__________.