Meaning: a feeling of sadness that one has when love has been lost or has faded
--->The young woman spent the weekend alone with her aching heart.(http://www.idiomconnection.com/heart.html#B)
2. Take on
Meaning: Take on: to undertake; assume: to take on new responsibilities.
--->John did not accept the job, for he did not want to take on all those responsibilities.
(http://a4esl.org/q/h/fb-vm-take.html)
3. When Robert met his girlfriend after a long separation, he told her that she was a "sight for sore eyes."
Meaning: sight for sore eyes : long time no see, and happy to see again
--->Robert told his girlfriend that he was happy to see her.
(http://www.eslcafe.com/quiz/face.html)
4. at odds
Meaning: in disagreement
--->He has been at odds with his boss over the new sales territory.(http://www.tigtag.com/community/language/1846_1_1.html)
5. If it's "just your cup of tea", it is PERFECT
(http://www.jobstriker.com/grammar/english/q/h/id-lb-food.html)
Meaning: just your cup of tea : PERFECT
Example: I hope this idea turns out to be just your cup of tea
