Complete the following sentence with a (compound) word derived from the one(s) given in bracket.
It will be a great （ ） to know that he has reached home safely.(satisfy)
【正确答案】：SATISFACTION
【题目解析】：
根据前文a great说明空格处应该填名词形式，satisfy的名词形式为satisfaction满意，且符合句意。句意：知道他已经安全到家了，真的太好了。
