Question

the wheel was to be removed agin because the two freinds had forgotten​

Answer 1

Answer:

Solution: The author's friend has taken out the ball bearings from the front wheel without any alarm. He then started fixing the front wheel only to realise latter that he had not put those bearings back into their place. He then moved to the chain.

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Answer 2

Answer:

In what condition did the author find the bicycle where he returned from the tool shed? Answer: When the author returned from the tool shed he found the man playing with the bicycle and twiddling it round his fingers. The remaining parts of the machine were lying on the path beside him.