( )I ____.at home yesterday. was B. were C. am
We had a picnic Saturday . A.\B. nextC. last
.No! they in Beijing. A.isn′t B. weren′t C. wasn′t
Robots can. A. talkB. talking C. talked
you at home yesterday ? A. Is B. WereC. Was
it a big city then ? A. Was B. WereC. Are