She wondered uneasily what use she would _____ this opportunity.

She searched all the places where she _____ haveleft her necklace but it was all in vain

So why didn’t you meet us on Saturday then?—I’m sorry about that— I _________ — I thought you were meeting next Saturday.

I don’t suppose Jim could have done so well in yesterday’s exam , ____________?

_________, you should read the passage and grasp the main idea. Then, if there are too many new words, try to _________ your dictionary.