As soon as he comes back, I'll tell him when （ ）.
（A）you will come
（B）will you come
（C）you come
（D）do you come
It is not immediately clear （ ） the financial crisis will soon be over.
（A）since
（B）what
（C）when
（D）whether
（ ） is known to us all is that the 2008 Olympic Games will take place in Beijing.
（A）It
（B）What
（C）As
（D）Which
