我认为他没有能力完成这项任务.

I ___don't__ ___think__ he has __been___able__to__finish__ this task.
根据句意填写单词
A __careless___(care)driver is a danger to us.
根据首字母填空
People protected themselves from animals by fighting___ in the past.
hard-working的反义词是什么?lazy