She ________ Japanese when she was in Japan. Now she can speak it freely.[ ]

依次填入下列横线处的关联词语，最恰当的一组是(　　 )当前全国安全工作形势严峻，出现了种种问题，________有多方面的原因，________根本原因在于原有体制的弊端没有消除，有些政府官员安全责任意识不强。________，要尽快扭转这种局面，________通过进一步深化安全改革，________能实现。

essor Smith, I’d like to take a gap year to Africa to serve in a global anti-Aids campaign.—Good idea, ______ you can afford the time.

Yesterday one of my classmates sent me an invitation to take part in an English evening, but I _____ for the reason that I caught a bad cold.

I haven’t seen Mary recentlyAnd you?— Me neitherI’m afraid she _________ to her experiment for too long a time