Many tourists from the United States of America ----- to the Netherlands during April or May

One of the most beautiful sights imaginable ----- the vast expanse of multicoloured tulips.

For miles, a solid carpet of brilliant colours ----- the eye.

The flowers in that section ----- grown for their bulbs, not their blossoms.

When the flowers are in full bloom, the workers in each field ----- them.

Later, large garlands of brilliant blooms ----- sold to passing travelers.

Homes in every Dutch city ---- several vases of tulips during the spring.

A vase of flowers often ----- the vehicles of Dutch drivers in spring.

What is the subject of the following sentence?

The chimes in the tower of the church near my school play every hour.

What is the subject of the following sentence?

Your reaction to the questions in the poll gives the sociologist valuable information.

What is the subject of the following sentence?

Your essay on inter-tidal species lacks examples.