We all you to do that for one of your friends there can help you． [ ] A．promise

hope后面不能以不定式作宾语补足语，即不可以说hope sb．to do sth．; promise sb．to do sth．意为“(主语)向某人许诺要做某事”；persuade sb．to do sth．意为“说服某人做某事”；expect sb．to do sth．意为“期望某人做某事”。A、B两项不符合句意，答案为D项。