---------more,and you'll improve your spoken EnglishA,Speak B,Speaks C,Speaking D,To speak除了这个题目外,有时候句首是To...；有时候是ing的形式到底用哪个啊..

---------more,and you'll improve your spoken EnglishA,Speak B,Speaks C,Speaking D,To speak除了这个题目外,有时候句首是To...；有时候是ing的形式到底用哪个啊..
---------more,and you'll improve your spoken English
A,Speak B,Speaks C,Speaking D,To speak
除了这个题目外,有时候句首是To...；有时候是ing的形式
到底用哪个啊..

---------more,and you'll improve your spoken EnglishA,Speak B,Speaks C,Speaking D,To speak除了这个题目外,有时候句首是To...；有时候是ing的形式到底用哪个啊..
选A.
这是“祈使句+and/or+另一分句”的结构.两个分句是并列关系.前一分句是祈使句,用动词原形. 这个祈使句相当于以if 引导的条件状语从句.又如：
Study hard, and you'll pass the exam.=If you study hard, you'll pass the exam.
Study hard, or you'll fail the exam.（努力学习吧,否则你考试不会及格的.）=If you don't study hard, you'll fail the exam.
如果这题没有and,则选D.这时to speak就是不定式作目的状语.