What is the primary source of energy used for solar lighting, solar refrigeration, and solar dryers?

Something done in an unhappy manner

The artist's latest masterpiece is a ___________ of colors and emotions, capturing the essence of nature's beauty in a single canvas.

Sentences are given below with a blank. Fill in these blanks with the appropriate option.

The doctors have ___________ the cause of the illness to an unknown virus.

The health risks and its _______ on the global economic ecosystem has been the major priority agenda for all APEC economies this year.

The people alongside the victim were not  _________ help at all, but were  busy clicking pictures.

1) into

2) Besides

3) but

4) and

5) Though

Ankita  __       _  waiting for the train ___ three hours.

Directions: Below given sentences contain two blanks. Fill in the blanks with appropriate words. 

The courier boy informed that he will __________ the parcel by evening.