---Have you ____ some new ideas? ---Yeah. I will tell you later.

  Would you please drive more quickly? My plane will_____in twenty minutes.I want to but safety comes first.

The principle of the heating system in this building is that pipes ________ hot water from the boiler to every part of it.

________ with many other people, teachers have a relatively stable income.

Tom should not be sent to____ the task, for a start he hasn’t had enough experience.