I called at Tom’s home the other day, and he was found sitting on an armchair, in his hands.
What the boy enjoys _____ to have a room of his own.
_________ he is, he has a wide range of knowledge.
_________ difficult the task may be, we must finish it on time, because we can’t meet such a precious opportunity _______ we have expected.
Difficulties and hardships have ________ the best character of the young geologist.