While _____ in the room, we were all very excited.
The government has to close those small factories to prevent the water of the river ______.
There are _____ products to be sold in the factory store. Which of the following is not correct?
He did not regret saying what he did but felt that he _____ it differently.
--Excuse me,_________? --That’s £200 altogether, sir.
Going on a trip into space must be quite exciting experience.