'Can' modal for ability. 'who can play' is the correct relative clause.

'While' + present continuous for action in progress at moment of speaking.

'As/while' + past continuous (background action) when past simple action occurred.

'Give up' + gerund (-ing) → 'playing'.

'No' is a determiner before a noun ('interest') indicating absence.

'Scenery' is uncountable — no plural no indefinite article.

'Just now' + present perfect = very recently completed action.

'Entrust someone TO someone's care' is the correct structure here.

'Part from' = leave/say goodbye. 'Part with' = give away something you own.

'will' → 'would' and 'am' → 'was' in indirect speech.

'Lingua franca' = a language adopted as common medium between speakers of different native languages.

'Raise an eyebrow' = show surprise doubt or disapproval.

'Razzmatazz' = noisy showy activity intended to attract attention.

'Recalcitrant' = uncooperative and defiant. Antonym: 'Compliant' = willing to agree/obey.

'Obdurate' = stubbornly refusing to change. Synonym: 'Stubborn'.

'Repeal' = to officially cancel a law. Best synonym: 'Revoke'.

'Embezzle' = to steal money entrusted to one's care. 'Misappropriate' is the closest.

'Gracious' = courteous and kind. Antonym: 'Rude' = impolite.

'Loquacious' = very talkative. Antonym: 'Reticent' = reserved/reluctant to speak.

Machines are 'operated'. 'Handle' works but 'operate' is the most precise collocation.