Since the shop_____down, all the T-shirts are sold at half price.

I’llnever forget the day_____ the great scientist came to our school and gave us aspeech.

Better _____ all the lights are turned offbefore you leave the classroom．

I bought the digital camera two monthsago.— You mean that you __________ it for twomonths.

The accident is my fault, so I had to pay for the damage ______ the other car.