Mary is celebrating her birthday with friends. Now she is (40 / 14).
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My room number is (570 / 517).
A. 570
B. 517
I graduated from No. (15 / 50) Middle School.
A. 15
B. 50
Mary will take Flight MU (1940 / 1914) to Shanghai.
A. 1940
B. 1914
The story happened in (1830 / 1813).
A. 1830
B. 1813