Not until he questioned the manager several times ___________ that the engineer-in-chief had gone to an important meeting.

Vicky likes the book __________she borrowed from Jim.

Not until the stadium of Bird’s nest was completed in the end ____back to their normal position.

Did Peter fix the computer himself?—He _______,because he doesn’t know much about computers.

Listen! The teachers ________ a discussion in the meeting room at the moment.