It's not easy to read his mind

it's not easy to do It's not so easy to loving It's not easy to be everybody! it's not easy+? it‘s not easy to do the same things better还是it‘s not easy to It's not easy to be an astronaut’s son .. It's so easy outta your mind. It's very easy ( ) me to remember his birthday. It's easy to () it's not easy to predict the future同义句 It's not easy for me to learn math. it's not easy to forgettsomeehing that really happy：