Are they on the table? A.Yes,they are B.No,they are C.They are students.
We had a picnic Saturday .A.\ B. next C. last
.No! they in Beijing.A.isn′t B. weren′t C. wasn′t
Robots can. A. talk B. talking C. talked
you at home yesterday ?A. Is B. Were C. Was
it a big city then ?A. Was B. Were C. Are