It was a long time ________ the miners in Chile were rescued from under the mine.[ ]

The news of the mayor’s comong to our school for a visit was ______on the radio yesterday.

Mary, I should tell you it is the third time that you________ your homework. [ ]

_______ his own experiences in Italy, Mr. Whitecreated this famous novel.

_______ necessary for us _______ our environment clean and tidy.