English grammar questions who what

• Do the exercise on questions with who and what »

• Who read this book?
• Who is your best friend?
• What do you want to read?
• Who is doing this work?
• What did John tell you?
• I don't know what is to be done and who is to do it.
• What are you doing now?
• Who told you this?
• Who wrote these words and what do they mean?
• What do you like better tea or coffee?