1 . The economic problems of one country often have a great effect ______ the whole world. (用适当的词填空)

2 . I had an alarming encounter ______ a wild pig. (用适当的词填空)

3 . By visiting the disaster area,the president hopes to inspire the people ______(rebuild) their homes. (所给词的适当形式填空)

4 . The young man’s voice was just an ordinary voice,but he sang ______tune. (用适当的词填空)

5 . There is a mood of ______(pessimistic) in the company about future job prospects. (所给词的适当形式填空)

6 . In ______(anticipate) of my assignment, one of my music teachers let me perform for her as a mini practice exam. (所给词的适当形式填空)

7 . As a reward for his ______(brave), the soldier was given a gold medal. (所给词的适当形式填空)

8 . He had changed so much that you couldn’t recognize him. As a matter of fact, illness and age changed him beyond ______(recognize). (所给词的适当形式填空)

9 . On ______ (arrive) at the airport, we all were welcomed warmly. (所给词的适当形式填空)

10 . Stress and tiredness often result _____ a lack of concentration. (用适当的词填空)