Explain  the signs.  Это знаки:  do not enter. end  construction .  светофор .danger no smoking .  keep right .     используй слова -  smoke. stop. keep to your right .  enter. do not speed.

 The sign "do not enter" means that you mustn*t enter that room because it is forbidden or even dangerous.  The sign "end  construction" means that  you must stop and not to go further because there is no way. The sign "danger" means that you must  not speed it is dangerous to your life  The sign  no smoking" means that you mustn*t smoke here- it is forbidden to smoke here  The sign "keep right " means that you must keep to your right.