Respond to the questions.

[goodox]

Hello!

This are only responses. 

1. I would drive him to the hotel or phone for a taxi. 
2. I would definitely eat by courtesy. 
3. I would try to avoid conservations where I have to talk to him or her with name. 
4. If I have absolutely no idea about political situation in their country I would keep one's mouth shut. 
5. It were OK. I would try to find out what he likes or I would invite him to an expensive restaurant. You can't go wrong with that. 

Thanks for correction!

[Keswick (Contributor)]

Hello!

This are only responses. 

1. I would drive him to the hotel or phone for a taxi. 
2. I would definitely eat out of courtesy. - du meinst, dass du aus Höflichkeit etwas isst?
3. I would try to avoid conversations where I have to talk to him or her and have to use their name. 
4. If I had absolutely no idea about the political situation in their country I would keep my mouth shut. 
5. It were OK - möchtest du sagen, dass es OK wäre oder dass es okay ist - dann it would be ok. I would try to find out what he likes or I would invite him to an expensive restaurant. You can't go wrong with that. 

Thanks for correction!

[goodox]

Zu 2. Ja, aus Höflichkeit.
Zu 5. Das es OK wäre. 

[Keswick (Contributor)]

Dann ist meine Verbesserung so okay, ich ging davon aus, dass du beides so meinst wie ich es verstanden habe .

[Schuyler]

5. It would be OK. I would try to find out what he likes, or I would invite him to an expensive restaurant. You can't go wrong with that.

Könnte ich vielleicht fragen, was die Frage ist, die du antwortest? Die Antwort ist grammatikalisch korrekt, aber irgendwie klingt sie mir ein klein bisschen merkwürdig.

Aber sonst ist alles jetzt korrekt.

[Keswick (Contributor)]

Hi Schuyler,

Ich denke die Antwort muss sein: it would be OK.

[goodox]

5. You have bought expensive tickets for the opera but your guest mentions that he really dislikes it. 

[Duckduck (Contributor)]

These are only responses.

Hi goodox,
da obiger Fehler schon vorher mal aufgetaucht ist, gehe ich davon aus, dass eine kurze Erklärung hilfreich wäre...

Es gibt die sogenannten Demonstrativpronomen im Singular und im Plural:
Singular: this / that = dieses / jenes
Plural: these / those = diese / jene
Oben steht "responses" im Plural, also muss auch das Demonstrativpronomen im Plural stehen.
Grüße
Duckduck

[Duckduck (Contributor)]

Könnte ich vielleicht fragen, was die Frage ist, die du beantwortest / oder: auf die du antwortest? Die Antwort ist grammatikalisch korrekt, aber irgendwie klingt sie für mich ein klein bisschen merkwürdig / oder: kommt sie mir ein klein bisschen merkwürdig vor.

Aber sonst ist jetzt alles korrekt.

Not even proper corrections. Just some ideas to make it sound more German.  
Duckduck

[goodox]

Danke für den Hinweis.

[Alyssea]

4. If I had absolutely no idea about the political situation in their country, I would keep my mouth shut. 

Added a comma. 

3. I would try to avoid conversations where I have to talk to him or her and have to use their name. 

Also, with this, I'd change it to one of "talk to him or her and have to use his or her name," "talk to them and use their name," or "talk to him and use his name." English is weird with not having an accepted neutral pronoun other than "it" (which people tend to take as degrading), but it works better if you pick one and stick to it. I personally like to just use "him" if it's unknown, since it's easier than saying "him or her" everywhere, and "they" and its other forms were initially only plural, and have only become singular because of common usage. 

[goodox]

Thanks for the remark!