India and China are ................ populated countries. They have the highest population numbers.

After fifty years of life in the bustling city, my father has decided to lead a /an ................ life in the country. 

We were ................ to know about our manager’s decision to retire so early in his career.

I was really surprised to ................ an old school friend while walking on the beach. 

The polite classmate apologised to his colleagues for the ................ he had caused.

We hiked up the mountain all day, so we rested in a /an ................ shade when we reached the top.

My father’s experience and great reputation placed him in a/an ................ position to get the job easily.

Late-night phone calls are the biggest ................ for me. Once I wake up, I can't sleep again.

My grandparents enjoy spending their holidays at their own cottage in a/an ................ village in the UK.

Many migrants all over the world are expected to face ................ challenges.