They made an enormous effort in wildlife conservation. A lot of species were saved from extinction.

He's really got the bit between his ___________ so that he can pass the exam with flying colours.

The company should allow flexible working hours so that its employees can avoid traffic congestion.

He's a widower who _________ three children. 

You should ask for Henry's advice; he is very ___________ 

Everything's a bit more expensive here and property prices are extremely high. A lot of people have no choice but to live in the ____________ and commute in to work. 

It is not advisory to make travel arrangements during this time when the Covid-19 pandemic is still spreading at an unprecedented rate. 

It's not a good idea for us to swim in this lake.