there was a huge plaque of dirt.

The old rusty street was dead.

The atmoshere was poluted.

the street was totally deserted which was strewn with litter.

The old rusty street that was dead  was covered by a huge plague of dirt.

The classroom is silent.

The classroom is full of boys awainting their fate.

The classroom which is full of boys is silent, awaiting for their fate.

The champion who won again was undefeated.

London is been covered by darkness.

the river thames has vanished.

The streets are abandoned.

 

the streets were abandoned after the river thames vanished.

what used to be one of the most famous cities in the world is now abandoned.

Subordinate clauses.

Thought not quickly enough to prevent a swirl of gritty dust from entering along with him.

It was a bright cold day in april. The clocks were striking thirteen. Winston smith’s chin nuzzled into his breast. Winston smith made an effort to escape the vile wind. Winston smith slipped quickly through the glass doors of victory mansions. Winston smith wasn’t quick enough to prevent a swirl of gritty dust from entering along with him.