How can I propose a girl? Anybody plz help me

Well first she would have to love you and then slowly build up by asking her parents on how they think about you getting married with her, ask your parents too

Ibelieve the rising demand for workers on the huge plantations

Betray, destroy, and obey do not need to be changed to add the suffix -ed, because the "y" at the end of each word is preceded by a vowel  (so  they would be spelled  "betrayed," "destroyed," and "obeyed").

but hurry is different; it has to  be spelled "hurried" because the "y" at the end of "hurry" is preceded by a consonant.