1 . You can soon feel the determination—a quality Beethoven understood well because of his hearing difficulties—_______ (course) through the music. (所给词的适当形式填空)

2 . The tunes are easy _______ (sing), and the lyrics often leave you deep in thought. (所给词的适当形式填空)

3 . Over time, it _______ (expand) to include multiple options of soups, vegetables, meats and sauces, appealing to people of different tastes. (所给词的适当形式填空)

4 . One mouthful of comfort food takes us back to our cultural roots, giving us the “taste of home” that we cry out for and _______ (relieve) feelings of homesickness. (所给词的适当形式填空)

5 . _______ the impact of human activities continues to grow and the list of species in danger of extinction becomes longer, we are left with a question: can we afford to damage the “lungs of the planet”? (用适当的词填空)

6 . The problem is ________ will lead the research team. (用适当的词填空)

7 . It was not until the result of the exam was announced ________ he realized he had organized time badly. (用适当的词填空)

8 . They have the confidence and ability ________ (handle) the important matter well. (所给词的适当形式填空)

9 . ________ is important to me now is that I study hard to get admitted to a good university. (用适当的词填空)

10 . ________ the boy made so much progress in a short time surprised all of us. (用适当的词填空)