Flower cultivation is very profitable now, (Exclamatory)

Many people cultivate flowers for earning money.

= Flowers are cultivated for earning money (by many people).

At present, there is a great demand of flowers.

= At present, isn't there a great demand of flowers?

Everybody becomes glad to get flowers.

= There is nobody but becomes glad to get flowers.

In some cases, flowers are more welcoming than any other gift.

= In some cases, no other gift is so/as welcoming as flowers.