Read and choose. (读问句,选出一句合适的答语。)
(1)How long is your pencil?
A.20 ton. B.15cm.
(2)How big are your feet?
A.100cm. B. I wear size 17.
(3)Who’s heavier than you?
A. Mike. B. 30.
(4)How old are you ?
A.14 years. B.34 cm.