New Words：

doubt [daʊt]
v.怀疑；不相信；不能肯定；无把握
n.疑问；疑惑；不相信；不确定

Sample Sentences：

No doubt I will succeed in the end.
There is no doubt at all that we did the right thing.
Without doubt, she is the best nurse in the hospital.

I had no reason to doubt him.
I do not doubt that he will succeed.
I doubt if he'll listen to advice from me.

succeed [səkˈsiːd] v.成功;达到目的;实现目标;办到;做成
reason [ˈriːzn] n.原因；理由；道理

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