The computer decryption system was so complex he couldn't get past it.
a branch of medicine
He lived in a housing complex. This math problem is complex! The complex problem stumped many students.
the dog got embarrassed, after dinner.
His careless remarks are known to provoke heated arguments among his colleagues.
That is a complex problem.
You have a complex sentence. Best is the last word of a complete sentence. When is an adverb. It is followed by the word They. The word They starts a complete sentence. Thus, the word when makes the second sentence subordinate to the first sentence. That makes it complex.
I was very complex with my writing.
A complex sentence is a sentence consisting of an independent clause and a subordinating clause.
i need a sentence that have the word unborn
a compound sentence having a word bewilder?
Restraining Ramu from watching television made him fall ill.
The same way you make any sentence. It's not a complex word, you should be able to do this, so stop being lazy and do your own homework. Here's a sample, if you really are too lazy: "This is a sentence using the word 'particular'."