--- I don’t care what people think. --- Well, you __________. People’s idea is of great value to you.
Tom first met Lucy three years ago. She ____ as a teacher in a high school. A has workedB was working C is working D had worked
The young lady stopped and looked around as if_____ whether she was being followed. A seeing B to have seen C having seen D to see
--- Remember, Dad, Thomas Edison got bad grades in school, too. --- Stay in your room until you’ve _____ the electric lamp. A invented B discovered C made D imagined
There isn’t much time_____ . shall we go now? A leaving B to leave C being leftD left
____ he came back home that we knew what had happened .