Here are a few more of the predicate adjective or predicate noun sentences I need help with to see if I used the right one.

Wildflowers look lovely on the hillsides. PA

Mounties on sback are a common sight. PN

The Royal Canadian Mounted Police's nickname is the Mounties. PN

These mounties look impressive in their brown jackets. PA

Their uniforms are a symbol of their authority. PA

This police force became important in the 1800's. PA

The officers are government officals.PN

The Mounties are the model for police forces in many countries.PA

Their standards seem high. PA

Only talented people can be officers.PN

These are wrong. The rest are correct.

Their uniforms are a symbol of their authority. PA

The Mounties are the model for police forces in many countries.PA

Based on the sentences you provided, it seems like you have mostly used the correct choice between predicate adjectives (PA) and predicate nouns (PN). Here's a breakdown of each sentence:

1. Wildflowers look lovely on the hillsides. - Correct. "Lovely" describes the appearance of the wildflowers, so it is a predicate adjective (PA).

2. Mounties on horseback are a common sight. - Correct. "Common sight" is a noun phrase that renames or identifies the subject "Mounties" and is therefore a predicate noun (PN).

3. The Royal Canadian Mounted Police's nickname is the Mounties. - Correct. "Mounties" renames or identifies the subject "nickname" and is therefore a predicate noun (PN).

4. These mounties look impressive in their brown jackets. - Correct. "Impressive" describes the appearance of the mounties, so it is a predicate adjective (PA).

5. Their uniforms are a symbol of their authority. - Correct. "Symbol" is a noun that renames or identifies the subject "uniforms" and is therefore a predicate noun (PN).

6. This police force became important in the 1800's. - Correct. "Important" describes the state or condition of the police force, so it is a predicate adjective (PA).

7. The officers are government officials. - Correct. "Government officials" is a noun phrase that renames or identifies the subject "officers" and is therefore a predicate noun (PN).

8. The Mounties are the model for police forces in many countries. - Correct. "Model" is a noun that renames or identifies the subject "Mounties" and is therefore a predicate noun (PN).

9. Their standards seem high. - Correct. "High" describes the state or condition of their standards, so it is a predicate adjective (PA).

10. Only talented people can be officers. - Correct. "Officers" renames or identifies the subject "people" and is therefore a predicate noun (PN).

Overall, you have used the correct choice between predicate adjectives and predicate nouns in each of the given sentences. Well done!