WhendidtheGreenscome的精選

問題詳情：選擇填空從A、B、C、D四個選項中，選出可以填入空白處的最佳選項。—WhendidtheGreenscometoChina?—They_____Chinaforsevenyears.cometo    beento      comein   beenin【回答】D知識點：動詞時...