Choose the correct answer

----- Nội dung dịch tự động từ ảnh -----
19. Dad introduced me to chess at the early age.
A. At the early age, I was introduced to chess by Dad.
B. At the early age, I introduced Dad to chess.
C. To chess at the early age Dad was introduced me.
D. Dad said that I played chess at the early age.
20. It was not possible to see inside because the window was covered.
A. The window was covered so that it was not possible to see inside.
B. If it was not possible to see inside ,the window was covered.
C. The window was covered so, it was not possible to see inside.
D. It was not possible to see inside so, the window was covered.