It will do you good to _____ a holiday.
To , we didn’t have breakfast.
, a good idea occurred to him.
Not until he retired from teaching three years ago having a holiday abroad.
Two lawyers have donated $50,000 to ________ our school's campaign "Help the Needy", whichwas started by our former headmaster three years ago.
The experiment shows that proper amounts of exercise, if regularly, can improve our health.