— Could you give _______ an introduction to the new machine?
— Of course. I will tell you how to use it.
| A．him | B．us | C．her | D．it |
What the doctors really doubt is my mother will recover from the serious disease soon．
| A．when | B．how | C．whether | D．why |
It is generally considered unwise to give a child _____he or she wants.
| A．however | B．whatever | C．whichever | D．whenever |
______leaves the room last ought to turn off the lights.
| A．Anyone | B．The person | C．Whoever | D．Who |
Sarah hopes to become a friend of ______shares her interests.
| A．anyone | B．whomever | C．whoever | D．no matter who |
---- I drove to Zhuhai for the air show last week.
---- Is that ______ you had a few days off ?
| A．why | B．what | C．when | D．where |