The letter he looked forward to ___

问题描述:

The letter he looked forward to ___
a.coming at last b.came at last
为什么选B?look forward to doing不是吗

选B
翻译:他盼望的那封信最后还是到了.
look forward to doing的意思是“盼望某事的发生”
但是这里用的是look forward to something,这个something就是letter!只不过he looked forward to 作为定语被放在了letter的后面