go before居前

have to/have got t0不得不，必须

help oneself自取所需(食物)

keep out of躲开，置身…之外

get out of逃避，改掉

have get有

give oneself up自首，投降，投案

go along with陪同前往，随行

g0 in for从事，致力于，追求

hang on to紧握住，坚持下去

have t0 do with与…有关

hold on t0紧紧抓住，坚持

keep up with向……看齐，跟上…

let alone不干涉;更不用说

let go放开，松手

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