YouthatlettertoJames.However，yodidn't（）.
A、oughttowriteB
「句意」 你本應(yīng)該給詹姆斯寫信，然而，你沒寫。
「難點(diǎn)」 ought to have written 是虛擬語氣，與本句句意相符。
Ifyourcar_____anyattentionduringthefirst12months,takeittoauthorizeddealer.
John'sscoreonthetestisthehighestintheclass;he____lastnight.
Marytiptoedoverandtooktheclockawaybecauseshehatedtohearit（）whenshewastryingtogotosleep.
Allofuswouldhaveenjoyedthepartymuchmoreifthere_____quitesuchacrowdofpeoplethere.
Toobtainasatisfactoryresult，onemustapplytwo____ofpaintonacleansurface.
