have begun studying 是begin to do
an ocean event who is ,who改成which
This event is an increase in the temperature of the Pacific Ocean that appear,appear后加s
the Peruvian fishermen whom first noticed whom改成who
whose its name 删its
have begun studying 是begin to do
an ocean event who is ,who改成which
This event is an increase in the temperature of the Pacific Ocean that appear,appear后加s
the Peruvian fishermen whom first noticed whom改成who
whose its name 删its