—Are you coming to the English evening?—I’m not sure. I ________ go to the concert instead.

--- I had thought he would be nervous in this speech competition, but he turned out to be calm.--- He        quite enough preparation for it.

—Listen! Is that Millie singing?—No. It _____ be Millie. She has gone to Beijing.

----Will you take up teaching as a career after graduation?---- Hard to say. I ________ go abroad for higher education instead, but it depends. 

—Look at the picture on the wall. It ________be David’s.—Yes, his name is on the first page.