31. A large sum of money has been raised for the ____________ of the poorly-educated children in the mountainous districts.
It was hot weather that he went for a swim.
The new bridge is ______ the one built last year.
You can’t imagine this lake used to be a beautiful place in our province.
With a lot of problems _______, the principal decided to hold a meeting to have a discussion about them
He made up his mind to devote his life _____ pollution ______happily.