If it（ ）possible, I would have helped him, but I was too busy.
A: is
B: was
C: were
D: had been
A: is
B: was
C: were
D: had been
举一反三
- I could have helped him out, to tell the truth, I _____ too busy. A: am B: was C: have been D: had been
- I would have been able to help him, but I so busy. A: were B: had been C: was D: would be
- 8. I would have told him the answer, but I _________so busy then. A: had been B: were C: was D: would be
- I had hoped to see her off at the station, but I _____ too busy. A: was B: had been C: would be D: would have been
- I ___ him the answer ___ possible, but I was so busy then. A: could tell, if it had been B: must have told, were it C: should have told, had it been D: should have told, should it be