I begged her not to tell anyone else, and she said she would ________.
—Do you feel like ________ there or shall we take a bus? —I’d like to walk. But since there isn't much time left, I'd rather we_____ a taxi.
— I can’t find Mr. Brown. Where did you meet him this morning? —It was in the hotel _______ he stayed.
His remark was considered to be quite _____, because it deepened the gap between two parties and caused more conflicts.
As is often pointed out, knowledge is a two-edged weapon which can be used _____ for good or evil.
Polar explorers have to be extremely _____ to bear the climate and other hardships.