Unlike traditional gyms, app-backed gyms offer people ________ options to exercise.
| A． |
casual |
B． |
regular |
C． |
flexible |
D． |
tight |
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Unlike traditional gyms, app-backed gyms offer people ________ options to exercise.
| A． |
casual |
B． |
regular |
C． |
flexible |
D． |
tight |
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