Nobody knew what he （means） by saying that、2.The singer will join us in the game if he（is2.The singer will join us in the game if he（is / has / will / will be）free this afternoon.3.China lies （in/to）the east of Asia and （in/to）the nouth of Australia,帮我看一下括号里面的.

Nobody knew what he （means） by saying that、2.The singer will join us in the game if he（is
2.The singer will join us in the game if he（is / has / will / will be）free this afternoon.
3.China lies （in/to）the east of Asia and （in/to）the nouth of Australia
,帮我看一下括号里面的.