单选题 While (attempted) (to reach) his home before the storm, John (had an accident) (on) his bicycle.
【正确答案】 A
【答案解析】[解析] 应改为attempting。分析句子结构可知前面是一个时间状语从句,因为前后主语一致,所以可省略从句主语及谓语的be动词。原句应为:while he was attempting to reach his home...。省略he was后A项应为attempting。句意:当他试图在暴风雨前回到家时,约翰骑车遇到了车祸。