--Would you mind my sitting here for a moment?--______.
I don’t agree with you two. I prefer______ a new car rather than______ it.
It was not until he arrived at the office_____ realized he had forgotten the key.
You can’t imagine _______ when they received those nice Christmas presents.
It is difficult for us to _________ a conversation with so much noise around us.
____ of the land in my hometown ____ covered with trees and grass.