Read the text and fill in the gaps with the correct forms of verbs as per subject and context. COVID-19 (a) ——— (transmít) when people (b) ——— (breathe) in air contaminated by droplets and small airborne particles (c) ——— (contain) the virus. The risk of breathing these in (d) ——— (be) highest when people (e) ——— (be) in close proximity, but they (f) ——— (inhale) over longer distances, particularly indoors. Transmission also (g) ——— (occur) if splashed or (h) ——— (spray) with contaminated fluids in the eyes, nose or mouth, and rarely via contaminated surfaces. People remain contagious for up to 20 days, and (i) ——— (spread) the virus even if they (j) ——— (not develop) symptoms.