Nowadays, a graduate with a master’s degree_____ fail to find a high--paid job , which discourages a lot of college students.

 Thanks to his pension, Li Zhentian, _____ give each of his grandchildren RMB 5 as a Chinese New year gift for the first time.

-–Mary knows the city quite well.--She______ well have been there before.

—–I think the man over there must be Tom.—–It _____ be him. He has ______ to America.

— Did you visit the museum today? — No. We ______ it, but we spent too much time shopping.