23. —Do you ______ the idea of living a low-carbon life?—It sounds tough, but it is a tendency.
As expected,the program is actually slowing down due to a________budget.
-Jeffery seems to go without proper food and sleep for days. -Leave him alone.That's________he reacts to a lost love.
She________the opportunity,but unfortunately she just let it go.
I don't remember who came first,but we all________the lecture.
We can't avoid negative thoughts,but we should make it a habit to replace each negative thought with a positive________.