Five daughters send their mothers undercover as 21-year-olds. From dating to working to activism, the mums will be immersed in their world. Can the mums pull off being 21 Again? 　　1/4 Five daughters send their mums undercover as 21-year-olds. 　　2/4 In the second phase of the experiment, the girls pack their undercover mums off to work. 　　3/4 In the third phase of the experiment, the ... (展开全部)