Tom was thinking about how to explain to the teacher why he was late for class, when a good idea ______ to him.
—Could I use your computer for a few moments, please? —______. I’m not using it myself.
______many times, he finally understood it.
Many children, __parents are away working in big cities, are taken good care of in the village.
—What’s that noise? —Oh, I forgot to tell you. The new machine ________.
. E-mail, as well as telephones, ________ an important part in daily communication.