1/Everybody in the work must unite their efforts to maintain and protectq peace  2/she put on warm clothes so as not to catch cold 3/she locked the door so as not to be disturbed  4/he cut the hair so as to avoid being arrested by the police  5/we should take advantage of the scientific achievements ì the world so that we can develop our national money 

1 Everybody in the work must unite their efforts so that they can maintain and protect peace.

2 She put on warm clothes so that she wouldn't catch a cold

3 She locked the door so that she couldn't be disturbed

4 He cut his hair so that he could avoid being arrested by the police

5 We should take advantage of the scientific achievements of the world so as to develop our national money