Only when I made it to the train station _______ that I had left my ticket at home.
After many experiments, finally we __________ the material we wanted very much.
The water __________ the sand soon disappeared.
Mobile phones __________ in China are well worth trusting for many reasons.
In the last few years thousands of films __________ all over the world.
Sam___________ some knowledge of the computer just by watching others working on it.