27.I would have come to see you earlier, but I __________ too busy.
You can get the best result ________ you carry out the experiment under the desired conditions.
---You’ve finished off two pizzas! ---Yes. But the second is ___________ little bit small, so may I have __________ third one?
The officer insisted the young girl______a thief and ordered she______free.
I have to see the doctor because I a lot lately.
Considering his health, I advise him to ______ an hour or two each day to work out.