It is during summer breaks that we first taste the satisfaction of work that ______ into h

It is ____ that the two families are asked if there are any objections right during the ceremony.

How many hours is Moscow ahead of London during the summer？A．2B．4C．6

It is essential that misunderstanding ______ during business negotiations.A．be avoidedB．is

It is in February that came the historic visit of Nixon to China. During the visit Sino－Am

It is during the reign of______that Britain build up an empire "on which the sun never set

It is said that ______ 2000 factories were closed down during the economic crisis.A、pr