Can every simple sentence be changed into complex or compound...?

You might be hearing an exercise, changing a simple sentence into complex and compound in your text questions. 

Can every simple be changed into complex or compound...?
No, It's impossible unless the simple sentence contains a phrase that helps to make complex or compound.

"I am living in Chennai"
This is a simple sentence. Can it be changed into complex...? No, there is no phrase with this simple.

Only a simple sentence along with phrase can be done into complex or compound.

"Because of capital of  our state, I am living in Chennai."
This is also a simple but with phrase (because of capital of our state-is phrase here.), so it is possible to change into complex or compound.

"I am living in Chennai because it is the capital of our state."- Complex

" Chennai is the capital of our state and so/ so that/ hence/ so / I am living here - Compound

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See some sorted out simple, complex and compound sentences.

Simple
Sheela taught classical dance in the U.S on her staying there for 5 years

Complex
Sheela taught classical dance when she was staying in the U.S for 5 years.

Compund
Sheela stayed in the U.S for 5 years, then she taught classical dance 
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Simple
In spite of her being tall, she wasn't selected in the fitness examination.

Complex
Although she was tall, she wasn't selected in the fitness examination.

Compound
She was tall but she wasn't selected in the fitness examination.
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Simple
Due to Oviya's getting stress, she quieted from the game of Big Boss.

Complex
Since (or) As Oviya had gotten stress, she quieted from the show of Big Boss.

Compound
Oviya had gotten stress so that she quieted from the show of Big Boss
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Simple
Being an unsupported man, he has achieved.

Complex
Though he is an unsupported man, he has achieved.

Compound
He is an unsupported man, however, he has achieved.
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Simple
I can start your work only after your making early payment.

Complex
If  you make your payment early, I can start your work.

Compound
Make your payment earlier, then I can start your work
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MAGHENDRAA INSTITUTE OF MUTUAL SPOKEN ENGLISH
NAGAPATTINAM
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