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__________ walk is expected to last all day, so bring __________ packed lunch.  

A. A; a       B. The; 不填      C. The; a      D. A; 不填

_________ walk is expected to last all day, so bring __________ packed lunch.

A. A; a       B. The; 不填      C. The; a      D. A; 不填

__________ walk is expected to last all day, so bring __________ packed lunch.

A. A; a    B. The; 不填

C. The; a D. A; 不填

_________ walk is expected to last all day, so bring __________ packed lunch.

A. A; a       B. The; 不填      C. The; a      D. A; 不填

29. _______ walk is expected to last all day, so bring ________ packed lunch.

A. A, a                         B. The, /                       C. The, a                      D. A, /

_______ walk is expected to last all day, so bring ________ packed lunch.

A. A, a    B. The, /  C. The, a D. A, /

____ walk is expected to last all day, so bring ____ packed lunch.

A. A; a    B. The; 不填  C. The; a     D. A; 不填

__________ walk is expected to last all day, so bring __________ packed lunch.

A. A; a            B. The; 不填       C. The; a          D. A; 不填

_____walk is expected to last all day, so bring _____packed lunch.

A. A ; a    B. The; /    C. The ; a     D. A; /