.___________ in the sports world, a sportsman needs to train constantly to keep himself in best condition.
The bad weather meant__________ the rocket launch(发射)for 48 hours,.
She was afraid __________ the dog in case it became dangerous.
We’re leaving at six o’clock ,and hope_________ most of the journey by lunch time.
I__________ you somewhere before, but your name has escaped me_________.
What worried the child most was _________ to visit his mother in the hospital.