What a surprise! Harry used to get nervous because he couldn’t organize his ideas well _________ to express _________ clearly.—Great, havent’t you heard, “Where there is a will, there is a way.” Let’s give him a big hand.

The light in his office is still on. Do you know _______?—To prepare for the material(材料) the meeting will need tomorrow, I think.

He is ______ is known as a hacker —- he likes to show off on the Internet and attack websites.

Whose book is this ? — It must belong .

Is Mary ? —No, she is a girl.