________ mainly for the invention of the telephone, Alexander Graham Bell devoted his life to helping the deaf.[ ]
Land animals are believed ______ from sea animals.
Don’t be afraid of asking for help _______ it is needed
依次填入下列各句横线处的成语,最恰当的一组是( )①大家都没想到平日看似娇弱的女生,在拔河赛中居然能和男生--- ,形成激烈的拉锯战。②一个更有争议的问题在于,人民币何时将成为能够与美元--- 的储备货币。③韩国对于活字印刷是做过贡献的,但是他们的这些成就与我国古代对活字印刷的贡献相比,是不能--- 的。
Everything begins hard. Don’t hesitate to ____ me if you are in difficulty. — Thank you. I will.