Candy，I have a toothache． What should I do？
You' d better see a dentist and get ____ X﹣ray．（ ）
| A． |
an |
B． |
a |
C． |
/ |
Candy，I have a toothache． What should I do？
You' d better see a dentist and get ____ X﹣ray．（ ）
| A． |
an |
B． |
a |
C． |
/ |
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