Have you finished testing the products?We are doing the testing for A.B as for now,the results will be known soon.Please tell me if you need other help.
Have you ever engaged in investment?orHave you ever worked on investment ?【自己从事投资业务】Have you ever invested in anything?【投资过某件事】祝你开心如意！
LZ的是短暂动作，LS是较长的持续动作，都有你曾经做过……这个意思
用完成时更规范。Have you ever......
Do you have any boats?祝你学习进步，更上一层楼！ (*^__^*)不明白的再问哟，请及时采纳，多谢 !
Have you ever invested?
也有可能是现代时！
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雨田里得麦圈
