Would you like to be a volunteer to help clean the room—_____ .

Whether ways can be found to stop pollution or not is just _____ worries the public. [ ]

Was the bungee jumper killed since the line broke after he jumped off the bridge?— Well, it’s totally unbelievable that he ______ have survived the jump.[ ]

_____Greens are preparing for the comingThanksgiving Day.

He is famous ____ his acting ____ an actor[ ]