.Before the college entrance examination, many students have shown of tension.Some have trouble in sleeping while others have lost their appetite.
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!