28.She said she would telephone but we ____ from her so far28.She said she would telephone but we ____ (hear) from her so far

28.She said she would telephone but we ____ from her so far28.She said she would telephone but we ____ (hear) from her so far
28.She said she would telephone but we ____ from her so far
28.She said she would telephone but we ____ (hear) from her so far

28.She said she would telephone but we ____ from her so far28.She said she would telephone but we ____ (hear) from her so far
so far到现在为止,所以应该用现在完成时
haven't heard

haven't heard

hadn't heard

haven't heard