Why could he be running?同义句转化() could he be running()?

Why could he be running?同义句转化() could he be running()? why could he be runing 改为同意句 ____could he be runing____? —i wonder why Bill isn't here.---he ——-be still waiting for a bus.这里填can还是could.为什么答案为could? He could be running for exercise that’s could be one reason why I here. 求翻译why is he late?he may be busy he.didn' t.runn.fast,he.didn' t.catch.the.bus用enough…to改写句子 he could be running for exercise分析一下句子结构 特别是could be running why could he do me an injury when he was already saved my He wondered what excuse be could make this time 这2句话哪句是正确的?Why could this phenomenon be arised of society?Why could be arised this phenomenon of society? c___the host to explain why he will be late If you had a choice,could you choose to be a man or woman?why or why not? Why didn't he look happy?Could you tell me?(改为含有宾语从句的复合句) 英语翻译3.Why could he save the cat and the monkey If you could go back in time to any date,when would it be and why? 这句话改如何改正?Why could this phenomenon of socity be arised?请说明理由. He never told us ---.A.where did he liveB.whom he lived withC.how could he live D.why was he living alone