---- Who knocked at the door?  ---- I’ve no idea. I just pretended nobody was at home, so I didn’t ask who was___. 
#16695
A
he
B
that
C
she
D
it
推荐题目
  -- _____is that used for?---_____ the floor.
#16278
A
Why; To cleaning
B
What; Cleaning
C
Why; To clean
D
What; clean
----- “Is there _____ here?”------ “No, Bob and Tim have asked for leave.”
#16623
A
anybody
B
everybody 
C
somebody
D
nobody