This plant has a high potential and grows rapidly under the right conditions.

He is thinking about the lower verse of the Tanka.

That proposal is not appropriate.

I think he is appropriate for that job.

I was surprised at his quick progress.

I am surprised at the quickness of this project's progress.

His company is experiencing rapid growth.

The flowers in my garden are growing rapidly.

Be careful, as there are venomous snakes lurking in the forest.

He was holding my hand tightly.