Unfortunately, when I dropped in, Professor Smith ________, so we only had time for a few words.
You can’t take the lift because it is _______.
After cooking, Mother ___________ making tea.
I’ll give you my telephone number ____ you might want to get in touch with me again.
Mrs. Black isn’t in and I’ll have to ring ___. I would appreciate it if you ring ____ after 6 o’clock.
I’ve come from the government with a message _____ the meeting won’t be held tomorrow.