it`s not interesting at all.why not _____us 1.take part in 2

it`s not interesting at all.why not _____us 1.take part in 2 it's not interesting at all.Why not join us? do not take a decision at it at all 正确?还是do not take an atte why don't you take part in our walk?=why not _us _the walk? Do you want to take part in a party?Why or why not? why do not take part in the sports meeting的同意句 翻译：It 's not at all good for our health. It ' s not good for it's not at all good for our health能说成it's not good for our it's not big deal at all什么意思 It's not at all good for my health It's not at all good for our helth ---It's an interesting game .----Why not ___ us?A.join B joi