In no country__   __Britain, it has been said? can one experience four seasons in the course of a single day．

 Boss ___ us taking some days off to get refreshed after so many days of hard work.

 we must ___ to the public the simple fact that drug are dangerous.

When the woman came back home, she had no idea how it ____ that her husband met with trouble again. 

The children do not know how to _______ themselves decently at the party.