从A、B、C和D、四个选项中，选出可以填入空白处的最佳选项。
21. ---Shall we have a talk with her and tried to persuade her not to see a movie tonight ?----There is no _______ talking to her . She never listens .
A. good B. value C. point D. worth
22. ----Go for a picnic this weekend, OK?
---- ____. I love getting close to nature.
A. I couldn’t agree more B. I’m afraid not.
C. I believe not D. I don’t think so.
23---- I’ will not take an umbrella with me today.
----_______it rains later in the day?
A. How B. What C. How about D. What if
