_______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.
_______isafactthatEnglishisbeingacceptedasaninternationallanguage.
Weather_______,we’llgooutforawalk.
_______forthefreeticket,Iwouldnothavegonetoseefilmsooften.
Johnsonwas________unknownbeforerunningforthepresidency.
Theengineer______myfatherworksisabout50yearsold.
