Question 1: C. aren't I (Note: This question has a grammatical error. It should likely be "Isn't it supposed to be easy...?" In that case, the answer would be "is it".)

Question 2: didn't he

Question 3: don't you

Question 4: aren't there

Question 5: weren't you

Task 2:

• Lucy: Good morning, Anna! Have a good day! YES
• Anna: Hi Lucy. You too. YES
• Lucy: Look! Is this your family photo? YES
• Anna: Yes, it is. YES
• Lucy: Your father is so handsome, and your mother is beautiful. YES
• Anna: Thank you. YES
• Lucy: Who's this? YES
• Anna: It's my older brother. YES
• Lucy: How old is he? YES
• Anna: He is seventeen years old. YES
• Lucy: Is this your older sister? YES
• Anna: No, she is my younger sister. But she is taller than me. YES
• Lucy: How old is she? YES
• Anna: She is seven years old. YES
• Lucy: How old are you? YES
• Anna: I am eight years old. YES