_________ it takes many years to gain the skills of an expert.
How can she from her illness in this room which is so dirty and dusty?
—Do you mean that we have lost our way? —_____, my dear. We’d better ask someone for help.
The old man bent with a heavy _______ on his back.
Tom was in low spirits because he _______ by the boss for his fault.
Do you think the proposed new airport _______ the local residents?