on track - acting/thinking in a way that is likely to achieve what is required, on trial - being tried in a court of law, on average - generally speaking, at risk - exposed to harm/danger, at present - now, at least - not less than, by far - by a great amount, by nature - as a result of natural/inherent qualities, by law - a regulation/rule used to control society , in decline - to become less, in danger - a situation where harm is possible, in effect - in operation/in force, out of control - no longer possible to manage, out of sight - not visible, out of necessity - because of conditions that cannot be changed,

Prepositional Phrases Speakout C1 Adv U6

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