They don’t know what ___________ the problem .
He said he would come to see us________next week. A. sometime B. sometimes C. some time
Which city has _________ population, Shanghai, HongKong or Qingdao? A. the smallest B. the most C. the largest
—— Excuse me, is this Lucy’s book? —— No, this is mine. _______is over there. A. Hers B. His C. Its
Tom lives on the ________ floor. A. two B. twice C. second
—— Would you like some__________? —— Oh, yes, just a little. A. bread B. potatoes C. vegetables