a) Leave no stone unturned
b) Cock and bull story
c) The rainy day
d) At a stake
e) Cursory glance

a) Leave no stone unturned (চেষ্টার ত্রুটি না করা): He left no stone unturned to secure the job.
b) Cock and bull story (গাঁজাখুরি গল্প): Nobody believed his cock and bull story about losing the money.
c) The rainy day (দুর্দিন): We should save some money for a rainy day.
d) At a stake (বিপন্ন): His reputation is at stake after the recent scandal.
e) Cursory glance (ভাসা ভাসা দৃষ্টি): Even a cursory glance at the report reveals several errors.