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      he is ill,       he goes to school.

A. Although ; but                B. /,/          C. Although ;/     D. But; although

          he is ill,          he goes to school

A. Although ; But        B. / ;  /        C. Although ; /       D. But ; Although

________ he is ill, ________ he goes to school.

A. Although; but

B. /; /

C. Although; /

D. But; although

__________he is ill, __________he goes to school.

     he is ill,       he goes to school.

—         he is ill,         he goes to school．

A．Although; but         B．Because; so            C．Although; /         D．Because; /