Are you covered by insurance?
保険に入っていますか
Are you crazy?
気は確かか
Are you done (with this pen)?
もう(このペンは使い)終わりましたか
Are [Have] you done with your shopping?
買い物は済んだ?
Are you engaged this evening?
今晩は先約があるのですか
Are you established in your new environment?
新しい環境に落ち着かれましたか
Are [Have] you finished with the scissors?
はさみは使い終わったの
Are you for or against his plan?
彼の計画に賛成ですか反対ですか
Are you for real?
((米))マジ?
Are you free at this moment?
今,手があいてますか