---_____ you ever _____ to Nanjing? ---Yes, I _____ there last year.

—Have you mended your shoes, Bob？—Yes, I _________ them twenty minutes ago ．

—When will Diana arrive?—Oh, she         . She is in the meeting room now.

--- How was your day off?--- Pretty good! I ______ the science museum with my classmates.

—My dream is to be a well-known movie star.—I believe you ________ your dream if you keep on working hard.