Recent campus tragedies show that safety measures are so important that we _______ take them too seriously.
______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.
After he had broken the world record, Rod ____ to a restaurant to celebrate with hid friends.