1 . I went back to my hometown after 20 years and the city had changed beyond all_________(recognize). (所给词的适当形式填空)

2 . We waited with great ______ (anxious) for more news about the accident. (所给词的适当形式填空)

3 . The speaker announced the________(establish)of a new college. (所给词的适当形式填空)

4 . It was hard to follow what the teacher was saying, and eventually I lost ________ (concentrate). (所给词的适当形式填空)

5 . The children have to sit a tough ____(select) test. (所给词的适当形式填空)

6 . Follow the____________(instruct) on the packet carefully. (所给词的适当形式填空）

7 . This report offered the most specific and accurate_________ (describe) of the problems. (所给词的适当形式填空)

8 . The ________ (disappear) of dinosaurs is not necessarily caused by astronomical incidents.（所给词的适当形式填空）

9 . More than 1000 ________ (compete) from the world came to Beijing ________ (compete) with each other in the ________ (compete) games for medals. (所给词的适当形式填空)

10 . Thank you for your ________( kind ). (所给词的适当形式填空)