I told Ben that the butterfly finally emerged from the cacoon, but he was a doubting thomas and needed to see for himself.
I told Kim that the tickets had been found, but being a doubting Thomas, she wouldn't believe me until she saw them.
To use the doubting Thomas idiom in a sentence, you might say "Fred wouldn't believe in a ghost unless he saw one himself, he is such a doubting Thomas. " The idiom refers to a person who will not believe something without strong evidence.
That IS a sentence.
yes
My farms are funny
The idiom, at sixes and sevens means that you are in a state of panic, confusion and uncertainty. You could use this idiom in a sentence by saying, she was at sixes and sevens as to whether or not to tell her best friend that her husband was being unfaithful.
My cousin's current favorite idiom is 'as nice as spice'.
To include an idiom in an example sentence, simply incorporate the idiom naturally into the sentence to convey a figurative meaning. For example, "She had a chip on her shoulder" is an idiom meaning she was easily offended or held a grudge.
A sentence could be: I will give you money when pigs fly
He showed his true colors when he did that.
I was doubting that she was telling the truth^ In this answer doubting is used as a verb. The word doubting can be used as a verb (somehow informal because DOUBT is a stative verb). It can also be used as an adjective according to some dictionaries (although dubious would be the best word)It was a very doubting/dubious answer (an adjective)
Faith-doubting holy man who encounters a case of demonic possession that could turn out to be real.