19.My brother went to France in order to learn France.

20.She wore warm clothers so as to get cold.

21.We turn off the flights in orther anybody not to look at my room.

22.Please arrive early so that we can start the meeting on time.

23.We hurried to school so as not to be late.

24.She tries her best to study math so as to pass the final exam.

25.He promised he telling lies.

26.I left Dave my phone number in orther him to contact me,

27.Nam promises he studying harder.

28.Tim went to Vietnam in orther to study Vietnamese.

29.You should practice English every day so as to improve it rapidly.

30.He always drives carefully so as not to cause accidents.