I feel blue these days.—Why? What makes you so _________? Cheer up, please.

Einstein, the famous scientist, was born _____ March, 1897. [ ]

_____ you _____ your homework yet?—Yes, I _____ it ten minutes ago.

Our sports meeting has been _______ till next Tuesday because of the bad weather.

Look! The sun is shining _____ the windows and everything is bright. [ ]