• open and shut

• in the open air

• come out into the open

• bring it out into the open

• open fire

• keep open house

• open his eyes to it

• keep one's options open

• lay oneself open to it

• an open book

• the heavens opened

• with open arms

• open his eyes to

• with one's eyes open

• keep an open mind

• open fire on it

• an open secret

• keep a weather eye open