Q. Mother has been ill . . . . . . . . last month.
✅ Correct Answer: (D)
since
Explanation: 'Since' refers to the starting point of an action. It relates here and is the correct answer, as it's given that mother got ill in the last month and she is still ill.
Explanation by: Team MCQ Buddy
'Since' refers to the starting point of an action. It relates here and is the correct answer, as it's given that mother got ill in the last month and she is still ill.