Most of the students feel nervous when they are reminded that it will be about half a year ____ they take the national college entrance examination[ ]

This physics problem is too difficult. Can you show me _______, George—Sure.

If you watch carefully, you cansee_______________ the man does the trick

that___________everything in the universe

,why are you so upset—-I _________ my cellphone all morning but it isnowhere to be found