to help                 helped    

to visit                  visited     

to arrive                arrived    

to remember     remembered

to return              returned    

to rent                   rented     

to receive            received     

to have                    had      

to be                    was/were  

to go                      went      

to buy                    bought   

to take                    took      

to see                       saw     

to think                   thought 

 to help - helped

to visit - visited

to arrive -arrived

to remember-remembered

to return-returned

to rent-rented

to receive-received

to have   -     had      

to be  -  was/were  

to go  -went      

to buy  - bought   

to take-  took      

to see   - saw     

to think   -  thought