this morning l helped an old man cross the street___to school.A in the way Bby the way C on the way D in this way

this morning l helped an old man cross the street___to school.A in the way Bby the way C on the way D in this way
this morning l helped an old man cross the street___to school.
A in the way Bby the way C on the way D in this way

this morning l helped an old man cross the street___to school.A in the way Bby the way C on the way D in this way
C
on the way to 在去.的路上

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C
on the way to school在去学校的路上

祝你开心。

选C， on the way 在。。。的途中，in the way 是妨碍，挡道的， by the way 是顺便， in this way 应该是通过这种方法， 所以选C