Having said goodbye to their friends, they _______ for home. A. set about B. set up C set down D. set off
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 !