Yesterday, a man said he saw _______ UFO in the park. The police are looking for _______ UFO now.
| A．an; the | B．the; the |
| C．a; the | D．the; an |
Yesterday, a man said he saw _______ UFO in the park. The police are looking for _______ UFO now.
| A．an; the | B．the; the |
| C．a; the | D．the; an |
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