2 . 阅读下面句子，根据句意，从方框中选择恰当的词或词组，并用其正确形式填空。

bend       abandon       have an impact on       boil down to       leave out significant       boost       for instance       be known as       on the contrary

1. Anne Sullivan was a superb teacher who ________ Hellen Keller.
2. Susan’s success in business ________ her determination and bravery.
3. They’re building new hotels in order to ________ tourism in this area.
4. I still remember one time I had to ________ my car in the heavy snow.
5. It’s no trouble for me at all! ________, it’ll be a great pleasure to lend you a hand.
6. John explained the case to his boss, being careful not to ________ any important details.
7. The discovery of the new drug is of great ________ to/people suffering from heart disease.
8. Near the top of the hill, the path ________ sharply to the right and enters an open grassland.
9. We made many improvements to our house. ________, we painted the walls and bought a sofa.
10. In the third mass extinction, which ________ the “Great Dying” now, more than 90% of all species died out.