5.This expensive dress won't be bought. (cđ → bđ)
7.A famous propessor will deliver a lecture tomorrow .(bđ → cđ)
8.Renewable energy will replace non-renewable energy. (bđ → cđ)
6, What will be done by them to save energy? ( mk nghĩ tk này )
9, He will not spend all his savings on buying new house. (bđ → cđ)
10, His parents will send Peter to a new school. (bđ → cđ)