Explanation: "In" is used to indicate being inside a general area, such as "in a beautiful neighborhood."

Explanation: "In" is used to indicate a specific period or month, such as "in July."

Explanation: "For" is used to indicate the duration of time, such as "for two years."

Explanation: "Confident in" is used to express self-assurance or belief in one's abilities, like "confident in her chances of success."

Explanation: "In" is used to indicate a period of time, such as "in a month."

Explanation: "In" is used to indicate being inside a general area, such as "in a big city."

Explanation: "Delves deep in" is a phrase used to describe a detailed exploration or analysis of a subject, like "delves deep in the complexities of human behavior."

Explanation: "Engaged in" is a phrase used to describe active participation or involvement, like "engaged in a heated debate."