If she _____the Great Wall next Sunday, _____ I. [ ]

I saw Mr Li into the school library just now.

“Great achievements can be done in _______ with nature, ” Schworer said.

Is the modern racing car outside ______, Laura? —Of course not. Nobody but Jim can afford such an expensive car. It must belong to ______.

Bob doing homework?—No, he isn’t. He is a letter.