Read the given passage and fill blank (i).
Directions: Complete this passage by selecting the most suitable option for the corresponding gap.
Sneezes, coughs, watery eyes, running noses and sore throats, are common _____ (i) _____ that mark a person infected with the common cold. The common cold is a viral infection that seems _____ (ii) _____. The reason is that antibiotics and ordinary medicine cannot treat a viral infection. The _______ (iii) _______ reason is that the conditions, under which we say that somebody has caught a cold, can be _______ (iv) ______ about by a range of viruses that list more than a hundred.
Reveal answer
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