Why are you so tired these days–Well， I have___________ homework to do.

Some people maintain that watching violence on TV isone of the major causes of _____ behavior and crime in society.

Please ______ that you have closed all the windows and turned off the lights before you leave the room

The Summer Palace is really beautiful. In fact, I doubt whether China has ________ park.

The cave is _____to the public, high up the face of a cliff which no one can climb.[ ]