In a Total Physical Response classroom，the students listen attentively and respond（）to commands given by the teacher.

Mary has just called and asked （）to have lunch with her tomorrow.

A．you and I
B．you and me
C．I and you
D．me and you

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（）electrons are still smaller.

A．As atoms small are
B．As atoms smaller as
C．Small as atoms are
D．Smaller atoms as are

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