For option (1), the expression of pocket implies to give money, especially generously. For option (3), the expression used is 'to conceal or hold back the feeling'. For option (4), the expression implied is 'to be too dependent on each other'. For option (2), 'pocket all the lines given to you' is grammatically correct but theoretically, we packet physical things like cash, money, etc. and not abstract quantities. Thus, option (2) is incorrect usage of term pocket.