( ) 1. What _____ your grandfather _____ this time yesterday ?
A. is ... doing B. was ... doing C. did .. do D. had ... done
( ) 2. ____ you ______ a meeting at four yesterday afternoon ?
A. Were ... having B. Was ... having C. Did ... have D. Do ... have
（ ）3. I called you yesterday evening ,but there was no answer.
-- Oh, I am sorry I _________ dinner at my friends home.
A．have B．had C．was having D．have had
( ) 4. A: Did you notice him come in?
No. I _____ a football game.
A. have watched B. had watched C. am watching D. was watching