A.Using in order to soas to. 45.He want to LonDon.He wanted to study English --> 46.She went to the gracery store.She want to buy some sugar. --> 47.He is learning Vietnames.He swishes to read Vietnames books --> 48.I went to the library.I want to return a book. --> 49.She's on a diet.She want to lose her weigh --> 50.I try my best to study.I want to get a good job -->

45. He wanted to go to London so as to study English.

46. She went to the grocery store in order to buy some sugar.

47. He is learning Vietnamese so as to read Vietnamese books.

48. I went to the library In order to return books.

49. She wants to lose her weight so as to be on a diet.

50. I try my best to study in order to get a good job.

45. He went (want) to London so as to study English.

46. She went to the gracery store in order to buy some sugar.

47. He is learning Vietnamese so as to read Vietnamese books.

48. I went to the library in order to return book.

49. She's on a diet so as to lose her weigh(t).  (weigh is a verb, weight is a noun)

50. I try my best to study in order to get a good job.

Chúc anh/chị học tốt nhé. Hãy nhớ rằng so as to=in order to= S want to