phr verb
Open up is used with these nouns as the subject: ↑ chasm , ↑ crack , ↑ divide , ↑ gap , ↑ gulf , ↑ market , ↑ rift , ↑ tunnel
Open up is used with these nouns as the object: ↑ avenue , ↑ channel , ↑ discussion , ↑ field , ↑ horizon , ↑ lead , ↑ opportunity , ↑ possibility , ↑ realm