When you stand on the top of the mountain and overlook the surrounding scenery，you’ll find it is________to climb it up with effort.
| A．worth | B．worthy | C．possible | D．worthwhile |
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When you stand on the top of the mountain and overlook the surrounding scenery，you’ll find it is________to climb it up with effort.
| A．worth | B．worthy | C．possible | D．worthwhile |
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