The line proved to be unsuccessful and was closed on 31 January 1932.

The line between life and death proved a thin one.

In the war on drugs, that line has proved very fuzzy.

This line does not require the extra fee, and has proved very successful.

The line proved popular, with some figures imported to the west.

So this year's hard line could prove costly in the future.

The new line proved an immediate success with the public.

The line proved memorable, and has been referenced ever since.

The offensive line, as expected, has proven to be a house of cards.

That line of thinking was proving to be quite applicable in the Corps as well.