题干
When we practice_____English,we often end up___in Chinese.
A：speaking,speaking
B：speaking, to speak
C：to speak,speaking
D：To speak, to speak
答案(点此获取答案解析）
A
When we practice_____English,we often end up___in Chinese.
A：speaking,speaking
B：speaking, to speak
C：to speak,speaking
D：To speak, to speak
用浓度，正确的使用措施是（ ）