---Excuse me, sir.Would you do me a favour? --Sure.What is it? ----I _____ if you could tell me how to pronounce this English word.
I'm sorry to bother you, ____ can you direct me to the railway station?
_______you need any help, please don't hesitate to let me know.
If I had known you were coming, I ______a larger table.
I passed by Joan quickly without greeting her, ______not to see her.
The inventor was determined to go on with the experiment_______countless failures.