—Did you meet with the famous star?— I had come here earlier.A. Only ifB. If onlyC. But fo

—Did you meet with the famous star?
— I had come here earlier.
A. Only if
B. If only
C. But for
D. As long as

A. Only if(答案→)B. If onlyC. But forD. As long as解析：连词辨析。Only if只要；If only 要是……就好了；But for 除了；As long as只要。句意：你见到那个明星了吗？要是我早点来就好了。表示遗憾，实际上没有见到。所以选B。

感谢回答，我学习了