1) He read about the accident while he __ on the train. a) sat b) was sitting 2) As he __ , he realised he knew the people in the news article. a) had read b) was reading 3) __ he got off the train, he went to work. a) when b) while 4) __ he was watching TV, I was studying. a) when b) while 5) When he __ school, he wants to go to University. a) finishes b) will finish 6) __ he becomes more senior in the company, he gets paid more. a) as b) when 7) It started to rain just __ he got home. a) as b) while 8) __ he was at work, he attended a meeting. a) During b) While 9) It snowed __ the winter. a) during b) when

When, while, as, during

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