题文
Accustomed to ______ the steep mountains， he had no difficulty reaching the top.
| A．climbing | B．climb |
| C．having climbed | D．have climbed |
推荐试卷
Accustomed to ______ the steep mountains， he had no difficulty reaching the top.
| A．climbing | B．climb |
| C．having climbed | D．have climbed |
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