Johnsonwas________unknownbeforerunningforthepresidency.
A、visiblyD
A 显然，明显地 B 外表上，直观地 C 垂直地，直立地 D 实际上，事实上
_______ is a fact that English is being accepted as an international language.
Thesyntacticrulesofanylanguageare______innumber.
He talked a lot about things and persons ________they remembered in the school.
Well-arrangedsentencesareconsideredgrammaticalsentencesthatareformedfollowingasetofsyntacticrules.
Youngerchildrenarecurious________howthingswork，andmanyofthemwanttotakeaparteverythingwithintheirreach.
