1除掉老鼠不容易。It is diffcult __kill_the___ rats.2你对这次伦敦之行感到兴奋吗？Are you _excitedin_____ the trip to London?3我刚刚从图书馆借了一本有趣的书。I have_justborrowed____ an interesting book from the library.4“他做完作业了吗？”“还没有”Has he __finished____ doing his homework?__Notyet______....
