If you ________ home without a word, your parents wouldn't be so worried now.
I am pleased ______to the party ------it was so fantastic!
I couldn’t help ______if the bus was late.
Don’t respond to any e-mails ______personal information, no matter ______ official they are.
She may have missed the train, ______ she won’t arrive for another hour.
There are more opportunities for disabled people to make______ contribution to______ society.