—Jim, your bedroom is so dirty.—Sorry, Mum. I ________ it at once.
Jack is going to _______________a hobby next year.
If we try our best, we can finish the work with _______people and ______money.
There _____________ more trees if we all take care of our environment.
I can see _________birds in the sky.
— __________will you come back to our city?—In a week.