Complete the following sentence with a (compound) word derived from the one(s) given in bracket.
Fishing and mountain-climbing are his favorite （ ）.(relax)
【正确答案】：RELAXATIONS
【题目解析】：
根据前文favorite形容词，所以空格处应该填名词，relax的名词形式为relaxation休息，且符合句意。句意：钓鱼和爬山是他最喜欢的放松活动。