问题补充:
单选题_______snacksanddrinks,buttheybroughtcardsforentertainmentwhentheyhadapicnicinSouthBankParklands.A.Not only they did bringB.Not only did they bringC.Not only brought theyD.Not only they brought
答案:
B解析考察倒装句。当not only 放句首时要用部分倒装,即提前be动词,助动词,情态动词。