Mary is the _________ child of her parents.
#51788
A
two
B
second
C
2th
D
second one
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Shanghai is  ______ years old.
#51757
A
seven hundred
B
seven hundreds
C
seven hundreds of
D
seven hundred of
______ of that country is covered by snow.
#51539
A
Second thirds
B
Two thirds
C
Twos thirds
D
Two third