On receiving the assignment,we _at once.A.set to work B.set out to work C.get down to workD.all the above选什么,如何翻译

We will make the sample on receiving your sample cost byte 英语常用语.还有Byte Me On The Ass。 Get off the ass! touch base with you on your possibility of receiving the project 请问,You're a pain in the ass!这里为什么用in不是用on么 ass pain in the ass是什么意思 what the shit is ass The ass and his purchaser fuck you in the ass what is the meaning ass The rock kit cena ass 另外,下面这个句子要怎么翻译：say thank you does wonders for the person on the receiving end too. ass这个单词怎么使用在美语中经常使用ass这个单词请问这个该如何使用口语中，这个词经常出现，比如 fall on ur ass 表示跌倒get out of ur ass ,and so on .I know the meaning of this word .but I wanna know the mea 求翻译Get your ass up here on the board now,Jim!It is time to get the ship on the move! was agreed at the receiving forwarding agency The ass and his purchaser外语 The ass and his purchaser的翻译