2012年大学英语四级改错练习题三

13、This is all which I can do for you.

       14、Can you think of anyone who’s house was here?

       15、The watch that Mother bought it for me works very well.

       16、This is the only book that were borrowed from the library.

       17、The day which she had to leave arrived at last.

       18、The doctor whom they want to see have come.

13、which—that    14、who’s—whose  15、去掉it  
 16、were—was    17、which—when  18、have—has