He had to_____(live)by himself because his parents both died.
问题描述：
He had to_____(live)by himself because his parents both died.
答
不定时后面接动词原形，这是真理！！
答
Live
固定搭配：have to do
答
live,to后面加动词原形!
亲!
答
为你解答。
He had to (live，原形) by himself because his parents both died.
他不得不靠自己生活，因为他的双亲已经都去世了。
解释：have to do，不得不做。在have to后要填动词的原形。