47.We should learn from thoseare always ready to help others.

78.You me because I didn＇t say that.

77.Which door does this keyto?

76.People areto smoke at a gas station.

75.I＇m not surprised you failed the exam. Youhave worked harder.

74.When they had finished playing, the children were made toall the toys they had taken out.

73.She was the only girl in her family, but her parent didn＇ t her.

72.If you take this medicine twice a day, it should your cold.

71.Heknowledge of this language by careful study.

70.It would bea risk to let the child go to school by himself.

69.The age of the students in this classfrom eighteen to twenty.