Radium salts, which have been found to _____ in bones, give rise to cancers of the bone.
— What is that building?— _____ the garden equipment is stored.
— Is he said ____ his car lost?— Yes. He was so foolish ____ leave his car ____.
— Is this Mr. White’s office, Mary?— Yes, _____.
Whether we’ll hold the sports meet depends on the weather, _____?
____ makes our school proud is _____ more than 80% of the students have been admitted to key universities.