In the United States, Father’s Day falls on_____ third Sunday in _____ June.

If one of your teeth feels ______, don’t be ______ and turn to your dentist for help.

The principle of the heating system in this building is that pipes ________ hot water from the boiler to every part of it.

The programme is very popular．—________． We all like it．

is my close friend, who canbe what he promises.