Was it in the beautiful park _________was located by the sea ______you first met your new English teacher?
—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.
Bob would have helped us yesterday, but he ________.
—I left my handbag on the train, but luckily someone gave it to a railway official. —How unbelievable to get it back! I mean, someone ________ it.(2011·江苏)