题目

_____ will you stay in Hong Kong and ______ will you be back? A . How soon, when B . How long, how soon C . When, how soon D . How soon, when 答案：B 329×99+329 12600÷15×28 （112-2726÷58）×160 （3180+2491）÷（207-154） 12150÷45-7650÷45 27+979+1973+9021．