题目内容
3. The climber failed (climb) up to the top of the mountain.
4. Could you teach me how (work) out this Maths problem?
3. to climb 4. to work
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题目内容
3. The climber failed (climb) up to the top of the mountain.
4. Could you teach me how (work) out this Maths problem?
3. to climb 4. to work