He is my online friend, and we play online games every day.

This festival is always crowded with a large number of people.

He stood in the kitchen to knead the bread dough.

This food has been heat-treated to kill bacteria.

This bacteria can be killed by heat.

He prayed earnestly for his sick mother.

He prayed fervently for his sick friend.

Walking on the hot sand is very difficult.

He poured boiling water into the coffee cup.

He dug up vegetables at the very root.