Question

John waited until the teacher finished speaking to Mary and then he ________．

[　　]

A．

stepped up

B．

stepped down

C．

stepped off

D．

stepped in

Answer 1

答案：A
提示：

句意为“约翰在等老师同玛丽谈完话后，才走上前去”。step up加紧；走上前；step down辞职；下台；step in介入；干涉。