To our great ________,Geoffrey’s illness proved not to be as serious as we had feared.

Many nations have promised to reduce greenhouse gas emissions, but are falling short of the _______ reduction of 25 to 40 percent of 1990 levels.

There might be life on other planets, but so far scientists haven’t found enough _____ to prove it.

He spent a large ___ of money on his books.

 It is a fact that there is a (n) _______ towards regional cooperation.