Okay, two more groups to look at:
Portugal are first, with 6 points and +3 GD
Mexico are second, with 4 points and +2 GD
Angola are third, with 1 point and -1 GD
Iran are fourth, with 0 points and -4 GD
Portugal are through, Iran are going home.
Mexico can go through if they beat Portugal or get a draw or Iran beats Angola or Angola beats Iran with a GD (between both matches) of less than +3.
Angola can go through if they beat Iran with a GD of more than +3 and Mexico loses to Portugal.
This one's complicated:
Italy are first, with 4 points and +2 GD
Czech Republic are second, with 3 points and +1 GD
Ghana are third, with 3 points and +/- 0 GD
USA are fourth, with 1 point and -3 GD
Okay, pay attention.
Nobody is guaranteed to go anywhere yet.
Italy can qualify, if they beat Czech Republic or draw with Czech Republic. The other game is irrelevant to them.
Czech Republic can qualify, if they beat Italy or draw with Italy and have the USA-Ghana game end in a draw or draw with Italy and have USA beat Ghana by less than 5 goals.
Ghana will qualify if they beat the USA. The other game is irrelevant to them.
For the USA, they must beat Ghana and Italy beat Czech Republic or beat Ghana and Czech Republic beat Italy with a combined +6 GD or more to go through.
Okay, I think that's all cleared up...