选词填空,将方框中单词的合适形式填在横线上。
Dogs are ___________( 诚实的 )friends of human beings.
I felt so happy because my father ____ _ ( 答应 ) to buy me a new cellphone.
Please tell me the____________(原因)why you are late.
Would you give me some bread? I am so ___________( 饥饿 ) .
Who can give this question a ________(正确的)answer?