--- I think we have met the word before. --- Yes. It is in the reading material ____ we ____ reading yesterday.
-–Do you think that we should make preparations for the competition in advance? -–Exactly. ______.
-–Mary knows the city quite well. --She______ well have been there before.
The past two years ______a sharp rise in oil price, which adds to the burden of auto transportation industry.
The moment ______Leo will never forget is ______he joined the Air Force
I prefer to work here because salaries are higher here than ______in my country.