Nearly________ of the surface of our planet is covered by water.
My suggestion is that you ________ much meat.
When he was there, he ________ go to that coffee shop at the corner after work every day.
—Do you still remember when we went to Nanjing?—I can't remember now but ________ sometime last summer?
Had I known about this computer program, a huge amount of time and energy ________.
If he ________ my advice, he wouldn't have lost his job.