Most of us still wonder ___________ it is ________ makes those honest peasant workers, without being paid at all, resign themselves to the bosses

The problem of air pollution is becoming more serious ______ the increasing number of cars

Thousands of rockets ________ with chemicals were fired into the sky to create the beautiful scenes in the Asian Games [ ]

In France you________put bread on the table.You are not supposed to put it on the plate.

We made it possible the task would be finished ahead of time within three weeks