【单选题】
The manager came over and asked the customer how ___.
①
did the quarrel came about
②
the quarrel had come about
③
had the quarrel come about
④
had the quarrel come about
【单选题】
7.Sorry, there’s only one seat left. ______ you _____ she can have it.
【单选题】
A group of American soldiers were walking along the road in Irap when a bomb was _____, three of whom were killed.
【单选题】
Please ______ you cigar before entering this building.
【单选题】
All the mobile phones must______ before the meeting starts.
【单选题】
He asked John ______ he could swim.
【单选题】
He asked his neighbour to ________ his house.
【单选题】
The teacher asked ______ students to do homework ourselves.
【单选题】
Those gifts o rare books that were given t us were deeply _____.
【单选题】
You should _______ your shoes before you enter the dancing room.