Global warming is a big _______ for all and it’s important to raise awareness about climate change.

It’s known to all that the_____ of life is full of hardships.

The system has been designed to give students quick and easy _______to the digital resources of the library.

If you haven’t got the service advertised on their website, then you have _____ to complain about it.

 We have to keep       with the changing times.