In the middle of the square ______ two stones with a picture of a hero at each top.

In this institute, a medal with nine thousand dollars __________ gains success in science and technology every other year.

I can’t quite remember ________ you started playing golf.

The old woman _____ her sons and daughters _______ and see her soon.

Scientists have come to the conclusion_______ thetemperature on Earth is getting higher and higher.