We work together to achieve our common purpose: ________ world that is safer, cleaner and healthier than ________ one we are living in.
| A．the ; / | B．a ; / |
| C．the ; the | D．a ; the |
We work together to achieve our common purpose: ________ world that is safer, cleaner and healthier than ________ one we are living in.
| A．the ; / | B．a ; / |
| C．the ; the | D．a ; the |
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