2 . 根据句意选择正确短语并用正确形式填空

cross out        give way          in a row       (be) worthy of note       do the trick throw light on          play a part            (be) appreciate of            ups and downs set out               attach ...to....            sharpen one’s skills          carry on            pass on

1. Despite the extremely difficultly conditions, we are determined to __________ our task until we achieve success.
2. Suddenly the thin ice ________ and they all fell into the icy water.
3. My friend, life is full of ___________ and that is why we should always maintain a positive state of mind.
4. As soon as they reached the countryside, the scientists _________ to do their research.
5. The girl is really talented. She has won three high-school piano competitions _______.
6. The newly-found information has ________ the cause of this disease.
7. A little dog was wandering around the garden, with a chain _______ its neck.
8. __________ in playing basketball, Stephen Curry practiced day in and day out.
9. We are greatly _______ what you have done to help us out of the trouble.
10. When polishing up the article, he ________ some sentences and put in new ones.