Please ______ the traffic regulations.
The twin brothers stand under the tree, ______ and say nothing.
________ that I was puzzled.
The factory, including its machines and buildings, ______ burnt to ashes during the fire.
– Are you cleaning my room?– I can’t help _____.I can’t bear seeing people’s room in a mess!
He thought that painting copied by a modern artist was ______ great value and bought it ____ over a thousand dollars.