1.you try to do something beyond what you have already mastered, you will never grow.

59.Some diseases areby certain water animals.

58.They havethe time and the materials needed to complete the project.

57.Needless to say, he his good looks and sense of humor from his mother.

56.The shop assistant was dismissed as she wasof cheating customers.

55.All of us still remember the terrible earthquake thatWenchuan 11 years ago.

54.Once you arrive in a new place, you＇d betterthe local custom.

53.The police areforthe thiefinthe region now.

52.The firm will the workerstheir loss of jobs.

51.Rising prices may the rise in demand for these goods.

50.The boy is eager to knowledge in different fields.