Revise the wrong sentences, I will make progress!! Urgent

The specific modification of the question is as follows:

Incomplete or redundant components

1. From a large number of observational facts, we are told that in order to grasp the continuous changes of weather, it is best to Observations are made every hour. (The preposition structure is redundant, causing the subject of the sentence to be lost, and "from" and "中" are removed)

2. From this point of view, it can be seen that everywhere around tropical coasts and islands The coconut tree is also an adaptation of living things to the environment. (The ingredients are incomplete, and the following clause lacks the subject. Add "this" and "expression" before and after "it is also an adaptation of living things to the environment".)

3. After a winter of hard work, the people of Nanpu built a 4-meter-high, 20-meter-wide, and 700-meter-long river barrage and stood majestically by the Tianmu River. (The "people of Nanpu" in the sentence are The redundant subject should be changed into a preposition structure to make a conditional Zhuang: "After a winter of hard work by the people of Nanpu")

4. In order to adapt to the requirements of transforming old majors and building and developing new majors, our school It is necessary to establish new rules and regulations and a series of work. ("A series of work" does not have a corresponding predicate verb, and the word "carry out" should be added after "Our school wants")

5. Our high school First-grade students, generally speaking, we can all listen carefully and abide by classroom disciplines during class. (Remove the last "we" and change the sentence to "Generally speaking, during class, we are in the first grade All students can abide by classroom disciplines and listen carefully.”)