Question

Fill in the blank with the most appropriate word.
Thousands of people have seen the exhibition ________ it opened last month.

• A. while
• B. when
• C. until
• D. since

Answer 1

The correct option is D since

A preposition is a word which comes before a noun or a pronoun and establishes a relationship between the elements of a clause or words.

The correct answer is D)since as it indicates the time from to the present.

'While' , 'when' and 'until' cannot be used here as they indicate a duration, a situation and the time up to a certain point respectively.

Thousands of people have seen the exhibition _sinceit opened last month.