定义:A={b,c,a},B={c},A∪B={a,b,c},若M={﹣1},N={0,1,﹣1},则M∪N={____}.
The language purposes of this conversation are to
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bá hé____ xiānɡ yóu____ shuǐ ɡōu____
chǎn liànɡ____ zhì zào____
jì jié____ ɡōu tōnɡ____
nénɡ ɡòu____ jià zi____