1. The students in David's school volunteer to plant trees every spring.<br />2. My mother advises me to eat more vegetables to keep healthy.<br />3. Kate has kept this toy bear for five years.<br />4. The monkey king can turn himself into different animals and objects.<br />5. The Great Wall is so amazing, there are no other man-made objects as long as it.
B. 
C. 
D. 
E. 
F. 
