We think that it’s love _______makes the world ________ it is today.

Optimism had been growing ________ the weekend meeting of European Union leaders in Brussels would come up with a substantial plan for dealing with the debt crisis. [ ]

It ___ to chat online all day long. You’d better do something else.

Of these two basketball teams, the former comes from the US; the comes from England

________ your mom at home today—Yes，but she ________yesterday.