71.  So, I want you to tell me which is right and why.

72.  So I was very happy, because I said a right answer by myself .

73.  You must learn English hard and well!" so I was interested in English from then on.

74.  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 .

75.  So I imegimed the lovely time.

76.  Lanlan climbed into the litter-box and pulled the door from the inside so hard that it locked .

77.  so many of students like it.

78.  and on these days I can have rest, so I like it .I went to Beijing with my parents for my holiday.

79.  but I couldn't climb the top as I was so tired .

80.  so it's very hard to catch a bus .