Question

Alxander Ferguson was a worker on shipyards ________ he was 23, ________ he began to play professional football．

[　　]

A．when; when

B．until; when

C．when; which

D．where; when

Answer 1

答案：B
解析：

考查连词。句译为：Alxander Ferguson直到23岁还是一名船厂工人，(但)这时他开始专业踢球了。until“直到……时候才(不)……”；when“当……时候”。