The number of traffic accidents caused by drinking is ____ as the number of those caused by non-drinking driving.
The fireman told us the troubles they had ________ the fire ________.
Please hand on the papers to those ________ at the back of the classroom.
As a considerate secretary, she never fails to know what ________ in her daily routine.
________ the earth to be flat, many feared that Columbus would fall off the edge of the earth.
No matter how frequently ________, the works of Beethoven still attract people all over the world.