—Don’t always answer me with a simple “Yes” or “No”. Explain ______possible.—OK. I’ll try my best.
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.