His sister left home in 1998, and _______since.
The way ______the teacher gave his lessons was easy to understand.
The library _______at present will be put into use next month.
When you look for a job, it’s not your book knowledge but your experience_______ matters.
My grandmother is over 90 years old, ______loss of memory.
The boys followed the marks that they ______, until finally they found their way back to the campsite.