the doctor is examining the patient now(同义句) the doctor is ___ ___ the patient now

the doctor is examining the patient now(同义句) the doctor is ___ ___ the patient now
i can't do it because i'm busy right now(同义句)
i can't do it because i'm not ___ at the ___
英语人气:405 ℃时间:2019-09-06 09:02:41
优质解答
1. checking on
2. free, moment

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