If ＿ disobeys the school rules,he will be punished.

If ＿ disobeys the school rules,he will be punished.
A.all B.both C.anybody D.somebody
He never misses a good chance ＿ his English.
A.practice B.practicing C.to practice D.practiced
Every day,many people lose their jobs,and I think it is ＿ them to find new jobs in a couple of weeks.
A.easy for B.difficult for C.easy of D.difficult of