问题
选择题
If you have some trouble ______ these sentences, ask me for help please. [ ]
A. speak
B. to speak
C. speaking
D. to speaking
答案
答案：C
搜题请搜索小程序“爱下问搜题”
If you have some trouble ______ these sentences, ask me for help please. [ ]
A. speak
B. to speak
C. speaking
D. to speaking
答案：C