Place a single word into each sentence to make it correct.
1. [Click to select] cancer accounts for more deaths than any other form of cancer.
2. Of the three forms of lung cancer, the most common is [Click to select] carcinoma.
3. In this type, [Click to select] develop bleeding lesions as the dividing epithelial invade the bronchiole wall.
4. A second form, adenocarcinoma, originates in the [Click to select] glands of the lamina propria.
5. The least common, but most dangerous, is small-cell carcinoma, which easily and quickly [Click to select] to other organs.
