The homeless dog bounced around to various homes over the years after its owner died until finally it was ____ by a kind family.
The Chinese agricultural tax wasn't completely abolished __________2006,which reduced the farmers' burden greatly.
He complained __________ me __________ the food I had prepared.
You should try to be patient, Tracy. Learning a language is a slow __________. It takes time, you know.
The little boy looked __________ at the __________ tiger.
I don't think __________ possible to master a foreign language without much memory work.