1. My wife said in her letter that she would appreciate ________ from you sometime.
A) to have heard
B) to hear
C) having heard
D) hearing
2.The manager assured the customer that his complaint would be seen ________ immediately.
A) to
B) at
C) on
D) with
3. It’s necessary ________ the dictionary immediately.
A) that he will return
B) that he returned
C) that he return
D) that he has to return
4.Franklin’s ability to learn from observations and experience ________ greatly to his success in public life.
A) contributed
B) owed
C) attached
D) related

1. D 2. A 3. C 4. A