Byzantium if I’m not wrong
Answer: This second verb is always in the infinitive form and is placed at the end of the clause or sentence, e.g. Kannst du mir helfen? (Can you help me?)
Explanation:The modal verbs are almost always used with another verb, which is required to complete the meaning.
Answer: Hallo mutter or hallo mama
Explanation: Hello mother or hello mom
The second one
das ist kühl