63237
So I know there are many uses of か, but the one I want to focus on is using a
question word with か. For example:

> 何を食べるか知ってる？
>
> 何を食べるか知っていますか？

For these two sentences, the か inbetween the two words acts as a connector and
replaces the particle. However, I was wondering what to do if this か is at the
end of a sentence. For reference, I am trying to write the following:

> The contents of the reading are about how baseball entered Japan.  
>  あの読み物の内容はどうやって野球が日本に入ったか。

What I am unsure of is how to end this sentence is both plain and polite ways,
i.e.

> あの読み物の内容はどうやって野球が日本に **入ったか**

or

> あの読み物の内容はどうやって野球が日本に **入ったかです**

or something else.
CC BY-SA 4.0
2018-12-04T03:50:35.300
63234
2018-12-04T07:48:43.867
2020-06-17T08:18:27.500
-1
30784
question
grammar
か usage in subordinate clauses
[An embedded question using
か](https://japanese.stackexchange.com/a/13038/5010) forms a noun. You can say
何を食べるか **を** 知っていますか, although this を is usually omitted. Likewise, you can
attach だ/です to an embedded question, too. People often insert a comma between
か and だ/です.

> この読み物の内容は、野球がどうやって日本に入ってきたか、です。  
>  This article is about how baseball entered Japan.
>
> これは野球がどうやって日本に入ってきたかについての読み物です。  
>  This is an article about how baseball entered Japan.
>
> 大事なのは明日雨が降るかどうかだ。  
>  What is important is whether or not it will rain tomorrow.
>
> 株価がどうなるかに注目しています。  
>  I'm paying attention to what will happen to the stock price.
CC BY-SA 4.0
2018-12-04T06:02:03.190
63237
2018-12-04T06:19:23.060
2018-12-04T06:19:23.060
5010
5010
63234
answer