Question

7.               he has switched his job，we are obliged to find one for his vacancy. ( doubt)

毫无疑问，他是跳槽了，所以我们不得不赶快物色个人来填补他留下的空缺。

Answer 1

7. There being no doubt that / As there is no doubt that 考查doubt句型和独立主格结构。there is no doubt that毫无疑问。"毫无疑问，他是跳槽了"在句中充当原因状语，所以可用原因状语从句。同时，独立主格结构也可起到状语从句的作用，其构成即去掉with的"with+宾语+宾补"简化结构。