Pen : Write :: Knife : ?

Choose the correct synonym of \'Rapid\':

Find the error: \'She is more smarter than her sister.\'

He said, \'I have finished my work.\' (Indirect speech)

Doctor : Hospital is analogous to Teacher : ?

Read the passage: \'The Amazon rainforest produces 20% of the world\'s oxygen. Despite its importance, deforestation continues at an alarming rate, destroying approximately 10,000 square kilometers annually.\' What is the main idea?