1 . Recently it has been noticed _____ an increasing number of students are bringing smartphones to school, _____ means using smartphones reasonably has become _____ unavoidable topic for us students.

A．/; that; a

B．that; which; an

C．/; which; an

D．that; which; the

4 . 增加：在缺词处加一个漏字符号∧，并在下面写出该加的词。
删除：把多余的词用斜线\划掉。
修改：在错的词下面划一横线，并在该词下面写出修改后的词。
注意：1，每一句只有一处错误；
2，每一句只修改一处，多者不计分
1. She was such lovely dog, after all.
2. Unfortunate, I had an accident and hit another car.
3. I learned early in life that I had to be more patient and little aggressive.
4. The boy, who father is an engineer, studies very hard.
5. This book was wrote in 1969.
6. To our surprised, her husband came to thank us for keeping Rose
7. After the guests left, she spent much time clean up the rooms.
8. The number of the students in our school are 2000.
9. Although he is just a five- year-old child, but he knows a lot.
10. Both he and I are satisfying with the result.