Question

【题目】Johnson ______ two tickets for the concert before Joe made a phone call to him.
A.had booked
B.booked
C.has booked
D.were booking

Answer 1

【答案】A
【解析】句意：乔打电话给杰克逊前，杰克逊已经定了两张音乐会的票。表示“过去的过去”动作要用过去完成时（had + 过去分词），所以选A。