19.The children have been since their father left.

51.He hurried to the hospital, onlyhis father had just died.

50.When the little girl awoke, she found herselfby a group of soldiers.

49.He enjoyspop music while I prefer classical music.

48.raw materials into useful products is called manufacturing.

47.If you can＇t see the words written on the blackboard very well, maybe you need .

46. with the book I brought yesterday, the one from the library doesn ＇ t seeminteresting.

45.No matter how hard I searched my bag, my new pen was.

44.of his name, we had a lot of trouble in finding the patient.

43.I like English and I spend every minute I canEnglish.

42.What is the reason foron time?