Please tell me —— learn a foreign language well(A how can I B what I can C what to D how to

问题描述:

Please tell me —— learn a foreign language well(A how can I B what I can C what to D how to

how to

D
如果第一个选项改为 how I can 也是可以的

选D how to
A应是陈述语序
B,C what错误