80. My friend is strict with his work.

79. Although the boy is only six, but he knows a lot about science.

78. We have a lot of to doing.

77. The young man wanted to break away his family.

76. We are delighting to know you have passed the exam.　　

75. We can’t travel to the United States this year for _______ (缺少) of money.

VI. 单句改错(共5小题；每小题1分，满分5分)

74. Can you tell me how many students our class _________(组成) of?

73. He felt that he was to __________(责备)for the coldness that had grown between them.

72. The enemy was ________(打败)by the soldiers and the fight ended.

71. I don’t know what the man is _________(著名的)for.