The children are doing their fitness tests

Miss Li: Pat, you're 142 cm tall and 32 kg .

Pat: This year, I'm taller and heavier.

Miss Li: Yes, you're growing fast.

Mr Chen: Tim is faster this year.

Miss Li: Yes, he's doing well.

Mr Chen: Bob is slower this year. He's last in the race.

Miss Li: Wow! Candy is stronger this year. She can lift some very heavy weights.

Mr Chen: And Bob is weaker. He can only do two pull-ups. Last year, he did four.