—30 years old.
⑴How heavy are you? A. They are size 39.
⑵How tall are you? B. I'm 15 years old.
⑶How old are you? C. I'm 45 kilograms.
⑷What size are your shoes? D. I'm 158 cm tall.
⑸How long is your bed? E. It is 200 cm.