摘要：14． To climb the mountain road was hard work but to go down the hills was great fun. 上山很艰难.而下山却很好玩. to climb 和 to go down the hills 都是动词的不定式短语.在句中作主语用.
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________ the mountain road was hard work ________ to go down the hills was great fun．
- A.To climb, and
- B.Climbing, and
- C.To climb, but
- D.Climb, but
________ the mountain road was hard work ________ to go down the hills was great fun．
[ ]
A．To climb, and
B．Climbing, and
C．To climb, but
D．Climb, but