Matching Pairs English Conversation Matching PairsOnline version Pairs activity for english class by Tamarah Black 1 Back to square one 2 Err on the side of caution 3 Can of worms 4 Explore all avenues 5 Choke point 6 Escalate 7 Direction To restart; to disregard previous plans A bottleneck; something that blocks the execution of a project An action that could lead to a LOT of other issues Consider all available options Guidance or advice offered by mangers to their subordinates To report an issue to upper management Act more carefully and take no risk