Not until____ did Humphrey begin working.
Next door to ours ______, who has achieved much in physics.
---It was really very kind of you to give me a lift home. ---Oh, don’t mention it. I _____ past your house anyway.
The politician has been warned that he would be getting into great trouble ____ stick to his standpoint.
The boy spent as much time playing video games as he ____ studying.
Have you got any explanation to the question ___ he came here for last weekend?