Verified answer

a) They started to dig sideways and downward.

b) He didn't want them to go crazy with excitement and then die of disappointment if they failed to get to the place.

c) They didn't know it because it was dark in the tunnel.

d) They found something hard - those were wooden planks.

e) Yes, they were underneath the chicken house.

f) Because his plan was a success.

g) They found themselves in a huge shed with chickens.

h) They saw there white, brown and black chickens.

i) He asked his son to take the three plump hens to their mother and tell her to prepare a feast.