Who invented the sundial?
Jang Yeongsil did.
Aesop did.
Who wrote the book?
invent
invented
you/Sunsin?/ Did/ say/ Yi
Did you say Yi Sunsin?
(Lesson 9)
What do you think?
I think it is....
Who made the turtle ship? (geobukseon)
Yi Sunsin did.
(Gustave) Eiffel did.
Who built the tower?
draw
drew
the/ wrote/ Aesop/ who/ did./ book?
Who wrote the book? Aesop did.
(Lesson 7)
Make a question:
How often do you brush your teeth?
Who built the tower?
(Gustave) Eiffel did.
Who drew the picture?
make
made
/,/say/did/Yeongsil/I/Yes/Did/./you/ Jang/ ?
Did you say Jang Yeongsil? Yes, I did.
(Lesson 8)
Make a comparing sentence:
(donkey)
(dragon)
Who is....?
Dragon is bigger than Donkey.
Donkey is smaller than Dragon.
Dragon is faster than Donkey.
Dragon is heavier than Donkey.
Who drew the picture? 
Sin Saimdang did.
Yi Sunsin did.
Who made the turtle ship? (geobukseon)
buy
bought
robot/Who/Nara/made/did/ the/./ ?
Who made the robot? Nara did.
(Lesson 7)
Make a question and answer:

How often do you eat breakfast?
I eat breakfast five times a week.
Who wrote the book?
Aesop did.
Jang Yeongsil did.
Who invented the sundial?
speak
spoke
invented/./Who/Brothers/did/airplane/ Wright/ The / ?/ the
Who invented the airplane? The Wright Brothers did.
(Lesson 9)
What do you think?

I think its...
Expensive/ Interesting