6、rents_____. A.issleeping B.aresleeping C.sleeping D.Sleep ( )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. W
7、as ... having C. Did ... have D. Do ... have ( )3. --I called you at about half past eight last night , but nobody answered --Oh , I ______ in my office at that time . A. will work B. was working C. worked D. had worked ( )4.