How much ____ the yellow shoes? A. am B. is C. are
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