问题
选择题
He came running along and climbed ____ the train just as it was about to leave.
A．aboard
B．board
C．abroad
D．on abroad
答案
答案：A
搜题请搜索小程序“爱下问搜题”
He came running along and climbed ____ the train just as it was about to leave.
A．aboard
B．board
C．abroad
D．on abroad
答案：A
