. The magician picked several persons from the audience and asked them to help him with the performance.
The Bunsen Burner is so named because it is thought ___________ by Robert Bunsen.
--I didn't know this was a one-way street, officer. ------_________
--Which play shall we go and see?----_______________.
You _________think you're clever, but that doesn't give you the right to order me about!
--Jack's won _____________ holiday in London. --_________ lucky fellow!