_______ is a fact that English is being accepted as an international language.
D
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：ThatEnglishisbeingacceptedasaninternationallanguageisafact.
A linguistic theory is constructed about what ______ is and how it works.
We ________ go out to restaurants, but mostly we eat at home.
Bloomfielddrewon______psychologywhentryingtodefinethemeaningoflinguisticforms.
He said that the group ________ him a letter and asked him to go there for an interview.