Choose the underlined part among A, B, C or D that needs correcting.

When I was ate snacks, someone knocked on the door.  

From the story, the Vietnamese (10)____ always proud of the noble origin: dragon's children and fairy’s grandchildren.

The eldest son, who followed the mother with 49 brothers, (9)____ King Hung. He set up his capital in Phong Chau and gave his country the name Van Lang.

Although they separated, they remembered to help and protect (8)______, in need.

He took 50 of their sons to settle down into the sea. The rest (7)____ Au Co to go up lo the mountain.

One day, Lac Long Quan felt that he couldn’t live (6) ____ the land all the time.

One day, Lac Long Quan (5)____ that he couldn’t live (6) ____ the land all the time.

Lac Long Quan (4)_____ Au Co - the daughter of Agriculture Saint. The couple lived in harmony in a palace, Later, Au Co gave birth to a one-hundred-egg bag, hatching to 100 sons.