以下哪种情况一般有可能设计单端固定桥()
A.上颌侧切牙缺失
B.上颌尖牙缺失
C.第二、三磨牙缺失
D.第一、二磨牙缺失
E.间隔缺失
参考答案:A
If I (leave) ______ a little earlier, I would have caught the train.
How many times______ not to play with fire?
-I’m sorry. I’ll never do that again.
A.do you tell
B.had you told
C.are you told
D.have you been told