Could it be in the restaurant in ____ you had dinner with me yesterday ____you left behind your keys and wallet?
The good thing about today’s children is that they can_____ very easily to new environments.
As a teacher, it is my _________ to make the students devoted to their study.
The research lacks evidence,and therefore,its conclusions are doubtful.
A good friend should be kind and helpful. _________ is my mother.
Though he is ill,he has not quit .