Read the passage and do the exercises that follow by choosing the corresponding letter (A,B,C or D) of the correct answers.

          Cigarettes contain toxic substances like tar and nicitine. That is why we often hear people telling us that smoking is harmful to our bodies. Smoking weakens our lungs as well as other parts of our body. We will not be as active as before and will need more effort to move about.

Smoking affects our environment too. When we puff, we pollute the environment with smoke. This makes our surroundings unpleasant and unclean. Since Smoking does not do any good to us, we should always say no to cigarettes. We should advise our loved ones to take sweet instead whenever they feel like taking toxic puff.

Which word in the passage means” harmful to our body”?