This book is said to be a special one, which __________ many events not found in other history books．

Some problems ___ in the lecture by Mr.Smith are very popular in our school, such as the waste of electricity, water and food, etc...

I’m afraid that it is you, ________ Bernard, _______ to blame.

I had forgotten the date of that important battle so I _____ a history book.

Up to now, the little boy is still unable to _______ to us what he meant just now.