_______isafactthatEnglishisbeingacceptedasaninternationallanguage.
A、ThereD
为了保持句子的平衡，往往用先行词 it 作形式主语或形式宾语，而把真正的主语或宾语放到后面，尤其是 that 引导的主语从句往往用先行词 it 作形式主语。此句也可以改写为： That English is being accepted as an international language is a fact.
I was writing a report last night; ________ I would not have stayed up late.
Lyingundertheskull,thehumanbraincontainsanaverageoftenbillionnervecellscalled______.
Countrylifeisbetterthancitylife________itoffersfreshairandnoiselessenvironment
Hesaidthatthegroup________himaletterandaskedhimtogothereforaninterview.
Thereisadeadlock(僵局)inthediscussionwhenneithersidegives________totheother.
