It's cruical that it counts 30%----the final exam.应该填哪个介词?

It's cruical that it counts 30%----the final exam.应该填哪个介词? It's.that.造句 it's just that that it is!和that's it! that it is!和that's it! It's certain that it's sure that区别,语法, It's Like That歌词. So that's how it It's Like That 歌词 It’s reported that用法 It’s time that用法 Pity that it’s not That`s more like it! That's more like it. 英语翻译侧重that's it that's not what it “That's more like it! It's just that .造句