1.“I have our tickets.”

1.“I have our tickets.”
“That’s good.I was afraid that you ____ them.”
A.have forgotten B.had forgotten
2.“What were you doing when Anna phoned you ”
“I_____my work and ____ to take a bath.”
A.had finished;started B.had finished;was starting
3.It was for the first time that he _____to the party.
A.had been invited B.was invited
4.“What ______?”
“I_____my key and can’t open the door.”
A.happens;have lost B.has happened;have lost

1.“I have our tickets.”
“That’s good.I was afraid that you _B___ them.”
A.have forgotten B.had forgotten 宾语从句应与主句的时态一致.
2.“What were you doing when Anna phoned you ”
“I_____my work and ____ to take a bath.”
A.had finished;started B.had finished;was starting B.我刚做完工作正要开始洗澡.用 start的进行时态表示即将发生的事情.
3.It was for the first time that he __A___to the party.
A.had been invited B.was invited 固定句型:It is for the first time that ...中that 引导的句子常用完成时态.
4.“What ______?” B.强调动作造成的影响和结果时用完成时态.
“I_____my key and can’t open the door.”
A.happens;have lost B.has happened;have lost
请帮忙解释一下为什么另一个选项不对,

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