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He likes to dance, doesn't he?
We didn't see him, did we?
You don’t like me. ______________?
You’re coming. _____________?
You have finished. ____________?
The dinner is ready. ____________?
We haven’t visited you. _____________?
They have learnt a lot. _____________?
You didn’t visit him. ______________?
You are English. ______________?
They don’t study Spanish. ______________?
Laura isn’t here. _______________?
There is a cinema here. ______________?
He should study harder. _______________?
He would like milk. ________________?
He will visit you. _______________?
They haven’t studied. _____________?
They didn’t come. ______________?
He passed the exam. ______________?
We were very happy. ________________?
They are too sad. _______________?
They won’t visit them. ______________?
We mustn’t go there. ______________?
She doesn’t have to go. _______________?
She did many exercises. ______________?
We went on holiday. _______________?
The cinema doesn’t open. _____________?
Books are difficult. ________________?
John wasn’t there. ______________?
Cancer - A Killer Disease
Cancer is a dangerous disease in which certain cells in our body grow in an uncontrolled way. It is one of the world’s most serious illnesses. Together with heart attacks it kills more people than any other disease in the world.
The human body has blllions of cells. They are tiny elements of living material. Cells always reproduce themselves. Normally our body controls this process. It tells cells to divide themselves when we need it and to stop when we don’t. Sometimes, however, cell growth gets out of control and the production of cells doesn’t stop.
These cells that produce new tissue are called tumours. They can be benign or good tumours or malignant or bad tumours. A benign tumour usually stays in the same area in which it starts growing. It is often harmless. A malignant tumour however is dangerous. It can grow and spread to healthy cells and destroy them. Cells from malignant tumours can also spread to other parts of the body and produce more tumours. These malignant tumours are the ones that cause cancer and may even lead to death. Sometimes they enter the blood and lymphatic system. When this happens cancer metasizes.