Complete the following sentence with a (compound) word derived from the one(s) given in bracket.
If we don't start out now, we must risk （ ） the train．(miss)
【正确答案】：MISSING
【题目解析】：
根据前面的risk，后面应该是risk doing冒险做某事，所以填missing，且符合句意。句意：如果我们现在不开始，我们就有错过火车的风险。