--- I have trouble _______ my new computer.---Don’t worry. I’ll show you how _______it.A. using; using B. to use; to use C. using; to use
Last Monday the teachers and students held a grand ceremony __________ the 80th anniversary of our school.
Driving a car is not as difficult as you imagine, if you __________ the rules.
A good idea __________ to me, and I quickly picked up the phone to tell Jack about it.
So suddenly __________ that people had no time to escape.
I happened __________ with him when he was hit by a stone.