题文
Hi，Susan，When is Teachers' Day in China？
It's September 10th．（ ）
| A． |
in |
B． |
on |
C． |
at |
D． |
for |
Hi，Susan，When is Teachers' Day in China？
It's September 10th．（ ）
| A． |
in |
B． |
on |
C． |
at |
D． |
for |
试题篮
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