Unless everyone ________ actions to stop pollution, the environment problem may become worse.

vertisement says this materialdoesn’t ______ in the wash, but in reality it does.

It is most _____that the environmentalists will come to the area to investigate the possible damage caused by the serious pollution

126. The reason for the strike was that thecompany _____ its workers _____ long hours and low pay.

Theplay nextmonth aims mainly to reflect the local culture