We haven't been to Cox's Bazar ____ almost ten years.

We haven't been to Cox's Bazar ____ almost ten The correct answer is: for

Explanation:

In English, the prepositions for and since are commonly used to express the duration of an action or state, but they are used in different contexts. Let's break down why for is the correct choice here:

When to Use "For":

The preposition for is used to indicate a specific duration of time. It answers the question "how long?" Here, it fits the sentence perfectly because it indicates the length of time (almost ten years) during which the action (not visiting Cox’s Bazar) has been occurring.

• Example: "We have lived here for five years."

• Example: "She has been reading the book for two hours."

Why Not the Other Options?

From: This preposition is used to indicate the starting point of an action but not the duration. It wouldn’t fit in this context because it doesn’t convey how long the action has been taking place.

• Example: "He will be available from 9 AM."

• Example: "We moved here from another city."

To: This preposition is typically used to indicate direction or destination and is not used to denote duration of time.

• Example: "She is going to the store."

• Example: "He walked to the park."

Since: This preposition is used to indicate the starting point of an action and is usually followed by a specific point in time (a date, a day, etc.). In this sentence, we need something to indicate the entire duration.

• Example: "I have lived here since 2010."

• Example: "She has been working here since Monday."

Therefore, the most appropriate preposition to indicate the duration in the given sentence is for.