题目内容：

根据所给汉语注释, 在相应的横线上写出空缺处各单词的正确形式.( 每空只写一词 )

1.The class __________________(由…组成)of 56 students.

2._______________(祝贺)to you on your success!

3.He gave a small _______________(描述)of what he had seen.

4.He _____________(参加) the party in the name of his father.

5.The new teacher made a good ____________(印象)on the students.

6.We must stop the _____________(污染) of our rivers.

7.Mixed race __________ (婚姻) were not permitted by law in the united states.

8.We are waiting for the manager’s __________ (到达).

9.The _______________(压力)of the water can turn this wheel.

10.The little girl walked       (自信地）onto the stage, ready for her first speech.