A completely new situation is likely to        when the new law comes into effect.

The computer,        help we human beings have stepped into the information age, should be regarded as one of the most important inventions in the 20^th century.

The little boy, out of curiosity, _______ the toy to see how it worked, but couldn’t put it together.

–Do you need any help, Lucy?
--Yes. The job is        I could do myself.

These flowers should not be watered too ______, once _____.