-- Excuse me, Sir. You_________take your camera into the museum. -- Sorry, I didn't know and I promise you I_________.
Before you leave the lab, the doors and windows ____shut in case of rain.
Did John ____ the general cleaning yesterday afternoon?
To enjoy the scenery, Irene would rather spend long hours on the train ___travel by air.
For some students, the computer serves only _____ a tool that is used to play games.
The little boy was the only one who _____ the earth- -quake in his village, and the government sent him to a city school after that.