1. Indeed, on both sides, it ____ that the decisive battles ____ on the plains of Flanders and Northeast France.

2. In recent decades the efficiency of the United Nations _____ by a growing number of countries.

3. It seems likely that, by the end of the week, the costs involved in the construction of the bridge _____ by the Ministry.

4. We _____ no problems whatsoever with the dam since it _____ forty years ago.

5. They set up a liaison office in East Africa for marketing their goods but now they wish they _____ so.

6. There ____ many efforts to eradicate racism, but very little success ____ .

7. The Etruscans, who ____ a great part of Italy about 900 BC, ____ from Asia Minor.

8. The orders were that we ____ the area within hours to prevent further loss of life.

9. It ____ a mistake to think that all bacteria are harmful, for, without some species, we ____ for long.

10. Over the last few years, consumer interest in organic agriculture ____ up dramatically, and demand ____ currently ahead of supply.