Public service ads, also PSAs, often _________ for free, _________ to educate people about health, safety or any other problem that affects public welfare.
_____it is to jump into the water in hot summer!
The children had _____basketball.
– I was trying to repair that stupid machine, but I failed. -- Well, you_______.
The radio doesn’t work well; it needs_________.
Travelling from England to Scotland you _______.