如图，点 E 、 F 分别是矩形 ABCD 的边 AB 、 CD 上的一点，且 DF = BE ．求证： AF = CE ．
I want to buy a bike. At last I decided ____ a black one.
Where____ he ____ for his next vacation?
I have a sore back. You should _____ down and rest.
It’s a good habit ____ breakfast every day.
Tony ____ before exams.
粤公网安备 44130202000953号