20.—Though it is 30 years _____ we last met, I still remember the scene _____ we got separated on a rainy day.
----Could you lend me that book you ____ me about when I telephoned you? -----No,I am sorry, I can’t. I gave it to a friend.
—Don’t you feel surprised to see Bruce at the meeting ? —No. I really didn’t think here .
I should very much like to have gone to the party but I _________.
----I’m sorry, but there is no smoking on this flight. ----Oh, I _____ that. Sorry, I won’t again.
—I really don’t know how to thank you enough. —.