Write the following articles and nouns in their plural forms:

el lápiz
la nariz
el profesor
el ratón

los lápices

las narices
los profesores
los ratones

los lápices

las narices
los profesores
los ratones

To form the plural of these articles and nouns, follow these rules:

1. El lápiz ("the pencil") becomes los lápices ("the pencils"). To form the plural, replace the -iz ending with -ices.

2. La nariz ("the nose") becomes las narices ("the noses"). To make it plural, replace the -iz ending with -ices.

3. El profesor ("the professor") becomes los profesores ("the professors"). In this case, just add -es to the end.

4. El ratón ("the mouse") becomes los ratones ("the mice"). To form the plural, change -ón to -ones.

In summary, the plural forms of the given articles and nouns are:

- Los lápices
- Las narices
- Los profesores
- Los ratones