She always does very well in the English exams. But she can _____ understand English radio programs.

This is the most beautiful park I have _______ visited .

—Did you find the small village yesterday?—Yes，without any difficulty，for it has ________ changed over years.

 This is the book ______we are looking for. 

–Jack is good at writing short stories.----So he is. But he writes ______ than us. So he can’t get good grades in writing.