When I was in Spain last summer, I ______ quite a lot of Spanish.

— Well, that was really a good meal. I _____ you were a really good cook. — Thank you. 

(2014·安徽省芜湖三校一模)A recent study has  ________an unexpected conclusion that the African elephant should be divided into two different species.

The concert by Lang Lang was so well ______ that all the tickets had been sold out on the first three days last month.

 Though ________ in San Francisco, Dave Mitchell had always preferred to record the plain facts of small-town life.