They___in___same grade选择 A:all are;a B：are all;the C:all are;\ D:all;the

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They___in___same grade选择 A:all are;a B：are all;the C:all are;\ D:all;the
They___in___same grade选择 A:all are;a B：are all;the C:all are;\ D:all;the

They___in___same grade选择 A:all are;a B：are all;the C:all are;\ D:all;the
B

b

B

选择B，same grade“同一年级”前面应是定冠词

B

B