Student or Learner
This exercise says to combine the two sentences into one, using relative phrase.
1- Some buildings were hit by bombs. They are still burning.
a- Some buildings hit by bombs are still burning.(key)
2- Some people want to smoke. They have to leave the building.
b- People wanting to smoke have to leave the building.(key)
Is it all right to rewrite them as follows, please?
c- The buildings hit by bombs are still burning.
d- The people wanting to smoke have to leave the building.
Yes, but none of them contain a relative clause, so they are not relative constructions and thus there is no relative phrase.