Professor Tang didn't give us a speech today.It was ________ he had a traffic accident on the way to school.
A．that B．when C．why D．because
He taught his father how to get to know ________ is going on in his university life on the Internet.
A．how B．that C．what D．which
It is obvious ________ the former Libyan government will be replaced with the opposition government.
A．who B．where C．which D．that
When we arrived in ________ used to be called the foggy capital，we found London completely changed.London is now one of the capital cities in the world with the finest air quality.
A．which B．what C．that D．where
By talking with them，I get to know ________ Russian people see their country and the US.
A．what B．when C．why D．how
According to Aristotle，we are ________ we repeatedly do.Excellence then，is not an act，but a habit.
A．which B．when C．where D．what
