We'll have a class meeting ________ 3：30 this afternoon.

Everyone knows now that plastic pollution is ________ huge problem for the environment.

Remember to use sunglasses to stop the sun from ________ directly in your eyes.

The minute the alarm clock ________，I got up and took a quick shower.

________ English has a history of over 2，500 years，the first English dictionary didn't appear until the 17th century.