Tony’s classroom is on the (30th / 13th) floor of the new teaching building.
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Mary is celebrating her birthday with friends. Now she is (40 / 14).
A. 40
B. 14
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