I asked her whether she had done all the work herself ________ whether she had had asked sb. for help.
Because of my poor health, I have to __________ this long expected trip.
The camera was __________ by his son and he had to have it repaired.
My grandfather always forgets __________ the keys but he always says that he remembers __________ it.
__________to that piece of music always makes her feel happy.
There are many techniques that you can __________ to help you in managing your time better.