________ is today —-It’s Monday.

This book is said to be special which ____ many events not found in other history books.[ ]

Perhaps the day will come ____ people willbe able to breathe clean air in cities

_______ of volunteers will be needed for 2014 International Horticulture Exposition in Qingdao.—Let’s go and _______ them.

Before my father moved off, he told me again and again that I should ______ the rules and regulations of the school.