Most of the Chinese people are big savers — they get used to putting every penny in the bank ______ a rainy day.
She is the only one of the students _______ able to answer this question.
She will never forget the days ______ she spent in Beijing.
He loves his parents deeply, ________ are very kind to him.
I had to tell some of them what we wanted to do next, because ________.
When my mom saw the _______ gift I had prepared for her, she ________.