It is unnecessary for you to finish the report until tomorrow afternoo

 It is unnecessary for you to finish the report until tomorrow afternoon 

• A. A.You needn’t finish the report until tomorrow afternoon.
• B. B.You have to finish the report unitl tomorrow afternoon.
• C. C.You may finish the report after tomorrow afternoon.
• D. D.You should finish the report until tomorrow afternoon

To be unnecessary for sb + to +V = S + needn’t + V + St  
Các cấu trúc khac: 
Have to + V: phải làm gì do người khác yêu cầu 
May to +V: có lẽ điều gì sẽ xảy ra 
Should + V + St : nên làm gì