题干
If you have some difficulties ____ your grammar, you had better ask your teacher ____.
A：in; on some advice
B：for; for some advice
C：on; some advice
D：with; for some advice
答案(点此获取答案解析）
D
（5，7），
（2，3），将
沿
=（4，1）平移后的坐标为 （ ）
