________ snacks and drinks, but they also brought cards for entertainment when they had a picnic in the forest．

A.Not only they brought

B.Not only did they bring

C.Not only brought they

D.Not only they did bring

答案及解析： B

解析：

考查倒装句。not only…but also连接两个并列分句，not only放在句首，第一个分句倒装，并且时态保持一致。