问题
选择题
Are you _________ ready for school?[ ]
A. geting
B. getting
C. getted
D. geted
答案
答案：B
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Are you _________ ready for school?[ ]
A. geting
B. getting
C. getted
D. geted
答案：B
为上切牙切缘盖过下切牙唇面的垂直距离（）。