Six people were killed in the riot(暴乱),a policeman________.
Between the two parts of the con-cert is an interval,__________ the audience can buy ice-cream.
Mary was much kinder to Jack than she was to the others,__________,ofcourse, made all the others upset.
As a child, Jack studied in a villageschool,__________is named afterhisgrandfather.
To my parents, what __________ is the happiness oftheir children.
Theboy always feels lonely,__________ when no onespeaks to him.