1. The exercise is so difficult that I can't do it.
 It is such a difficult exercise that  I can't​ do it.
2. The apples are so green that they can't eat them.
They are such green apples that they can't eat
3. The coffee was so cold that we didn't want to drink it.
It was such a cold coffee  that we didn't want to drink
4. The weather was so hot that the boys couldn't play soccer.
It was such a hot  weather that the boys couldn't play soccer
5. The shirts are so expensive that Ha can't buy them.
They are such expensive shirts that Ha can't buy them.