YOU SAID:

My favourite activities are watching Vikings.

INTO JAPANESE

私の好きな活動は、ヴァイキングを見ています。

BACK INTO ENGLISH

My favorite activity is looked at Vikings.

INTO JAPANESE

私の好きな活動は、ヴァイキングを見たが。

BACK INTO ENGLISH

But my favorite activity saw the Vikings.

INTO JAPANESE

しかし、私のお気に入りの活動はヴァイキングを見た。

BACK INTO ENGLISH

However, my favorite activity saw the Vikings.

INTO JAPANESE

しかし、私のお気に入りの活動はヴァイキングを見た。

BACK INTO ENGLISH

However, my favorite activity saw the Vikings.