(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.

I’m sorry. I can’t help you now. —- ___________.

______ useful tool the computeris! — I agree. It’s ______ interesting as well.

Did I lock the door when I went out— Yes, you did. I saw you _____ it.

are living in world where mouse clicks rule our life, so online searches have become _______must.