问题
选择题
—Could I go to the movies tonight?
—No, you _____.You have to finish your homework first.[ ]
A. don't
B. can't
C. needn't
D. couldn't
答案
答案：B
搜题请搜索小程序“爱下问搜题”
—Could I go to the movies tonight?
—No, you _____.You have to finish your homework first.[ ]
A. don't
B. can't
C. needn't
D. couldn't
答案：B
中，上下颌位置均在正常范围内者，占全部患者的（）