In the passage given below, some words are missing. Choose the correct word from the given options to complete the passage meaningfully.

A forty year old man (a)______ and six other (b)______ when the van which they (c)______ overturned after colliding with a truck last evening.

(a) 1. killed 2. was killed 3. was killing 4. killing

(b) 1. were injured 2. injured 3. had been injured 4. injury

(c) 1. travel 2. travelled 3. were travelling 4. travel