选择数词完成算式，将其选项写在方框中。A. eleven B. twelve C. thirteen D. fourteen fourteen-o

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1. 选择数词完成算式，将其选项写在方框中。
A. eleven B. twelve C. thirteen D. fourteen

fourteen
-
one
=

two
+
ten
=

three
+
eight
=

fifteen
-
one
=