71.  At that time I was about twelve years old.

72.  When I was a Junior middle school student, my poorents work very far from me , so I had to live at school, I could see them only one time each month , I felt very lonely, it's too hard for me .

73.  So I imegimed the lovely time.

74.  He told him that next time he wanted to hide in a letter-box, he should remember to stick a stamp on himself.

75.  --the harvest time of the year.

76.  it took us much time to catch a bus.

77.  though there were lots of problems, we had a very good time.

78.  I have a lot of time to do my faverit things thaks to the summer holiday.

79.  We had a good time.

80.  at the same time, China also has develophing fast our country becoming stronger and stranger .