Thelittleboyisseriou的精選

問題詳情：Thelittleboyisseriousabout________intheevening.A．torun B．ran C．runD．running【回答】D點撥：本題用固定搭配法解題。beseriousaboutdoingsth.認真做某事。故選D。知識點：構詞法題型：選擇題...