Complete the missing letters. Insert the missing letters:

Solution:

The task requires filling in the missing letters to complete the words, likely based on the accompanying images.

1. The image shows sand dunes. The given letters are 'd', 'n'. The word is likely 'dune'. So, the missing letter is 'u'. dun
2. The image shows a firefighter. The given letters are 'd', 'ty'. The word is likely 'duty'. So, the missing letter is 'u'. duty
3. The image shows a tube of toothpaste or cream. The given letters are 'gl'. The word is likely 'glow' or 'glue' or 'glide' or 'glaze'. Based on the context of a simple worksheet, 'glow' or 'glue' are most probable. Assuming 'glow' for now. So, the missing letters are 'o', 'w'. glow
4. The image shows a devilish character holding a document. The given letters are 'd', 'p'. The word is likely 'drip' or 'drop'. Given the typical context of such exercises, 'drop' is more probable. So, the missing letters are 'r', 'o'. drop

Answer: dune, duty, glow, drop.