Answer:
Check answer below
Explanation:
 MEMORANDUM
TO: The Purchase Officer
FROM: The Manager, Human Resource Development Divisions
CC: The Finance Manager
DATE: 19th June, 2020
SUBJECT: Request for Office Furniture Replacement
The following items are to be replaced in various offices of the Human Resource Development Divisions. 
Ten office chairs
Fifteen office tables
Two office doors
Five windows
The company in charge of the supply of these furnitures is Roofingmed Furnitures Ltd.
I will be glad if this request is quickly approved to prevent a further delay of office activities. Thanks
 
        
             
        
        
        
Answer:
I think it is A, sorry if I am wrong
 
        
             
        
        
        
The answer is before because prefix of pre is before. For Example preheat
        
                    
             
        
        
        
The correct answer is "I can't believe he has <em>swum </em>to the island." Swum is the past principle of "swim." However, if you drop the word <em>has </em>the answer would be D and the sentence would appear much more grammatically appealing. :)