The two international companies reached an agreement, which was based on their             talks.

In my daily life I      ignore work , study , and other activities to check my phone for messages.

Make sure the gas is turned off after a bath, which would ________ cause danger.

The computer, ______________ help we human beings have stepped into the information age, should be made full use of to promote the social development.

—“Could we put off the meeting?” she asked. —“ ____ ,” he answered politely. “This is the only day everyone is available.”