Question

The child has come to school by bike _____ his own.

A．in

B．by

C．on

D．of

Answer 1

C

試題分析：句意:這個孩子獨自騎自行車上學(xué)。 on one’s own 獨自，單獨；這是一個固定的短語，相當(dāng)于alone。其他介詞不能和own 組成短語。故選C。