— How was your weekend, Bella? — Awful! That was the first time I _____ alone at home, bored to death.
He had _____ me to come to the party, but he didn’t show up.
E-mail, as well as telephones, _____ an important part in daily communication.
The water will be further polluted unless some measures______.
---Excuse me, sir, is this seat taken? ---_______.
--- Do you think Bob will attend the meeting this afternoon? --- ______.