Though we don’t know what was discussed, yet we can feel the topic_______

下列各句加点的成语的使用，全都不正确的一项是①“中星9

There must have been a large number of tourists in Sanya during the past Spring Festival, __________?

______ is impossible for us ______ the work in ten days.

Many people are worried that so many collegegraduates each year can’t find a job.-_______is no need to worry about it as the governmentis now making every _______to provide more jobs.