1. (2020高一上·哈尔滨期末) 下列每个句子中有一处语言错误。每处错误涉及一个单词的增加、删除或修改。

增加：在缺词处加一个漏字符号（∧），并在其下写出该加的词；

删除：把多余的词用斜线（\）划掉；

修改：在错的词下划一横线, 并在该词下面写出修改后的词。

注意：每处错误及其修改均仅限一词。

1. （1） The Student Union called up all the students to make more contributions to society.
3. （2） Some elderly people go deafly as they are aging.
5. （3） They offered him with a very good job, but he turned it down.
7. （4） The new policies of credit cards will be great benefit to our customers.
9. （5） Which is often the case, patients are well treated in hospital.
11. （6） I have seen most of the greatest buildings in the world which are famous on the Internet.
13. （7） Young while he is, he is very thoughtful so he is popular among his friends.
15. （8） It has been ten years when Mark graduated. He has been devoting himself to charity.
17. （9） Please see to it that all the books are put when they used to be.
19. （10） The ants are such little that they can't move the elephants.