Choose the most suitable option to replace the highlighted part of the sentence:
All the water in the bottles is over and you have to refill them
Show answer & explanation
Correct answer: D
Explanation
Both 'all the water in the bottle' and 'all of the water in the bottle' are grammatically correct and interchangeable in most contexts, although 'all the water' is generally more concise and common in conversational English. 'All of' can add emphasis to the entirety of the water.
Option (D) uses pronoun correctly by using 'it' to refer to the singular, uncountable 'water'. The verb 'is' correctly agrees with 'water', and the present tense 'have to refill' is consistent with the rest of the sentence.