phr verb
Keep up is used with these nouns as the subject: ↑ weather
Keep up is used with these nouns as the object: ↑ appearance , ↑ barrage , ↑ chant , ↑ charade , ↑ commentary , ↑ conversation , ↑ correspondence , ↑ fiction , ↑ fight , ↑ image , ↑ momentum , ↑ morale , ↑ pace , ↑ payment , ↑ premium , ↑ pretence , ↑ repayment , ↑ spirit , ↑ standard , ↑ tension