(江苏省南通市2009期末调研)－Mary, how did your Math test go?－I had thought I _________, but in fact I came in the top 10% in my class.

If they had known what was coming next, they __ their mind.

_______  it be true that the road is being blocked at this moment, for cars are moving like snails inch by inch

-What sort of house do you want to have? Something big?--Well, it ______ be big--that's not important. 

 Thanks to my teacher's valuable help, otherwise I ________ my college entrance exam.