After a long day of hard work, my only     is to get back home and have a good sleep. 

In order to understand the____ of the animal, she spent many years recording its daily activities.

My trousers are too old.I’ll have to buy ____.

——They say that my new car is a ____________ of money. ——Don’t you think those words are just sour grapes?

 As for diet, Michael Jackson chooses vegetables and fruit in ___________to any kind of meat.