8.At the foot of the mountain　　(lie) a village.

答案：lies

7.　　by keeping down costs will Power Data hold its advantage over other companies.

答案：Only

6.Only then　　she realize how much damage had been caused.

答案：did

5.So successful　　her business that Maric was able to set up new branches elsewhere.

答案：was

4.Little　　he realize that we were watching his every move， so he seemed to be going his own way in this business.

答案：did

3.Not until the motorbike looked almost new　　he stop repairing and cleaning it.

答案：did

2.Bill wasn't happy about the delay of the report by Jason， and neither　　I.

答案：was

1.Only if you eat the correct foods　　you be able to keep fit and stay healthy.

答案：will

10.解析：定语从句的引导词，先行词是those。

答案：who

9.解析：句意：他们可以不换气的游过游泳池。

答案：without