He wondered if he could slip out of the lecture hall without anyone
I knew ________ John Lennon,but not ________ famous one.
Having been walking for nearly an hour , I ______ a good sleep in bed .
_____ it rains tomorrow? I think we’d better take umbrellas.
A modern city has been set up in ______ was a wasteland ten years ago.
I _____ an old friend of mine while I was in London.