My sister is .A. in Class Five, Grade SevenB. in class five, grade sevenC. in the Class Fi

My sister is .
A. in Class Five, Grade Seven
B. in class five, grade seven
C. in the Class Five, Grade Seven
D. in the class five, grade seven

(答案→)A. in Class Five, Grade SevenB. in class five, grade sevenC. in the Class Five, Grade SevenD. in the class five, grade seven解析：句意：我的妹妹在七年级五班。年级和班级的表述为年级和班级在前，数字在后，先说班级，再说年级。且年级和班级的首字母都需大写；故选A。

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