A warm thought suddenly came to me ________ I might use the pocket money to buy some flowers for my mother’s birthday.
Jack tried to play a trick ______ his sister but she wasn’t taken ________ .
My English-Chinese dictionary has disappeared. Who_____ have taken it ?
People generally think that smoking is a bad __________ .
, they didn’t do well in helping each other with their study.
—How did you find your missing key? —.