Exercise 10. Complete the following report of an accident which happened in a factory with the correct form of the verbs in brackets.

On Friday morning at 9.25 a worker in the chemical plant (a) __ (find) by a female colleague. He (b) __ (lie) on the floor. His colleague (e) __ (check) that he (d) __ still (breathe) and then (e) __ (call) the emergency services. The injured man (f) __ (take) to hospital where he later (g) __ (recover). An investigation at the factory (h) __ (find) that a bottle containing a dangerous chemical liquid (i)__ (leave) open. Vapour from the liquid (j) __ (escape) into the air. While he had been working in the room he (k) __ (become) unwell. He (i) (become) drowsy and then (m) __ (fall) unconscious. Investigating officers ore interviewing everyone who (n) __ (work) in the factory that morning.