The backyard of a dog owner may be full of holes dug by his dog

• A、True
  
  

• B、False
  
  

• C、Not given
  
  

21. Nuzzel helps me _____

22. On twitter I am able _____

23. There are several factors that_____

24. Before my kids go to school, I_____

25. I call my parents_____

A. to listen to others

B. step into my office

C.kiss them goodbye.

D. affect my workout routine

E.to learn how they going

F.to surf the Internet efficiently

According to Shadel, any hacker can

• A、create different pass words
  
  

• B、open an electronic account
  
  

• C、steal people's information
  
  

• D、write software for businesses