问题补充：
Which of the following is right?
A. He goes to fishing every weekend.
B. I am looking forward to visit Beijing soon.
C. Many trees have planted since last year.
D. You had better not leave here before I come back.
答案：
A. He goes to fishing every weekend.
B. I am looking forward to visit Beijing soon.
C. Many trees have planted since last year.
(答案→)D. You had better not leave here before I come back.
解析：句意：以下哪一个句子是正确的？A错在应用go fishing 去钓鱼。B错look forward todoing 期待做某事，C错在应用被动语态，have been planted结合句意只有D是正确的，故选D
