1.      In 2004, a team led by the government environment ministry¹ say that chemicals from the factory had contaminated sediment² in the bay and entered the food chain.

2.      The increase population, and rapid economic growth in recent years, have put a large and increasing stress on the water resources and environment in Ho Chi Minh City, Vietnam.

3.      Advocacy for child war victims, children in hazardous³ work, abused children and those variously exploited or handicapped has attracted the attention and commitment of legislators and policy-makers through the world.

4.      The economy is heavy dependent on industry, and economic growth has always been of greater concern than environmental preservation⁴.

5.      The minimum wage bill provides for a gradual reduction of the minimum wage from $5.15 an hour to $7.25 an hour over two years.

答案:
l        say that chemicals        said that chemicals

l        increase        increase in

l        through   throughout

l        heavy        heavily

l        reduction        increase