Complete the following sentences with the correct preposition after nouns.
1) This is an example international collaboration.
2) The word attack teacher is not polite.
3) Her skin has a really bad reaction__ the sun.
4) Pollution is a threat the environment.
5) W e couldn’t believe his lack table manners.
6) He was responsible for the delay the preparations.
7) Tomas is making his third attem pt the world record.
8) W e have to make a decision the wallpaper today.
9) Here is no known cure this type of a snake bite.
10) I’m taking a break my vacation.
11) There are some differences British and American English.
12) All information this exhibition must be published.
13) She caused huge damage his car when she crashed into it.
14) Do you have a good relationship most of your relatives?
15) The advantage having free time is that you can do anything you want with it.

among the problems i encountered during my practicum as a teacher-trainee was time management. i always organize my lesson plans, allot time for each activity but once their on stage, i feel time slips and i realize that the session is over and i have not finished all the things i planned for yet!

  according to the readings i did on the issue, they all agree that the teacher should reflect on the things that may waste his time; i.e. the teacher has to see where his time leaks! examples of these, are draw from my own experience:

  instead of spending too much time explaining to students why not assigning them tasks where they can work actively and thus, be an essential part of the learning? you can interfere only when you feel that there is no other resort for them to understand the teaching point. this way, you will cover all the things you planned for as long as you proceed in the task.

when planning your lesson, apply the smart procedure: set specific objectives; measurable; achievable; realistic & time bound. that is, have clear objectives about your lesson that you can measure at the end of the session. to reach these objectives, they should be achievable meaning challenging but not defeating tasks; realistic meaning that you can really attain them without being too ambitious & finally time bound: you set a time limit for each stage of your lesson.

может быть такой текст сгодится. 

1. Angela said me to be ready, because at 5 o`clock we had to be at business center.2.    I asked Tom where he had gone. 
3.    He said to our guide that he was sorry. He was late. He had lost his way. 
4.    Gerry asked if I was able to lend him some money. 
5.    She said that there was no paper in the box 
6.    He said that he was living in London then. 
7.    She said me what I wanted. 
8.    She asked why that machine didn`t work. 
9.    He said not to sell the car 
10.  She asked me if I could open her bag. 
11.  He ordered to stay in bed for a few days. 
12.  Marry said that she had gone to London with her sister. 
13.  My friend said that he watched a lot of soap operas. 
14.  He asked Tom if he would be there the next day. 
15.  My mother asked if I cleaned the room the day before. 
16.  Her teacher said that he was not going to ask her. 
17.  The teacher asked how the accident had happened 
18.  My cousin said that they were not interested in politics. 
19.  I asked if I had not heard the bell
20.  He asked what I told the police 
21.  Tom said that New York was more lovely than London. 
22.  She said that he had turned out a good pianist. 
23.  asked me if I was kidding 
24.  She wrote to put up at that hotel 
25.  I asked where he/she was living then.