Review Unit 3 (TDTU - English 1)

The cold weather (a)   many problems on the railways in recent weeks.

Traffic jams (a)   people late for work and as a result, they feel stressed.

Recent increases in petrol prices (a)   public transport more popular.

The bad condition of this road (a)   three accidents this year.

I've just eaten some food which (a)   me ill.

According to the study, private transport (a)   60% more pollution than public transport.

Cars use less fuel because their engines are becoming (a)   (efficient).

Aeroplanes are one of the (a)   (safe) forms of transport

I have never travelled (a)   (far) than Delhi.

Traffic pollution is probably the (a)   (great) problem facing the modern world.