问题描述：
-I've run out of money to buy a new bike.-Oh,___.You have to walk.A.that's right B.that too bad
-I've run out of money to buy a new bike.
-Oh,___.You have to walk.
A.that's right B.that too bad
C.go ahead D.excuse me
-I've run out of money to buy a new bike.
-Oh,___.You have to walk.
A.that's right B.that too bad
C.go ahead D.excuse me
问题解答：
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