Question

All Subjects +had+been+present participle+object)
Exercise 4
Fill in the following blanks with past perfect continuous tense of the
verbs given in brackets
1. She .............. hard since December. (study)
2. Sarla .............. her lover for many years. (befool)
3. How long .............. the two neighbours .............. when a third one
joined them ? (quarrel)
4. I .............. for four hours when you knocked at my door. (sleep)
5. Tenzing .............. to climb Everest for many years before he
succeeded in his mission. (try)​

Answer 1

Answer:

1. Had been studying
2. Had been be fooling
3. Had been the two neighbors quarreling
4. Had been sleeping
5. Had been trying