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98. You can go swimming on _____ that you don’t go too far from the river bank.

98. You can go swimming on _____ that you don’t go too far from the river bank.

A. account                   B. purpose                    C. condition                  D. Situation

You can go swimming on _____ that you don’t go too far from the river bank.

A. account　 B. purpose　 C. condition　 D. situation