Question 9: Mark the letter A, B, C or D to indicate the correct answer to each of the following questions. Question 7. Mr. Brown ________reading the letter when the telephone on his desk rang.
Knowledge of tenses
Mr. Brown had just finished reading the letter when the phone on the table rang.
=> The action of reading the message finished before the action of the phone ringing. Since the act of calling the phone is divided in the past tense, the act of reading the letter must be in the past perfect.
Other structures to note:
Finish doing st: finish doing