What are you looking for?—I’m looking for the book _____ I bought yesterday. [ ]

Our school is _____ children _____ 6- 12.[ ]

Here are the photos in Beijing.[ ]

Have you ever been to the Qinghai Lake, Jim?—Yes. That’s the most fantastic place _______ I’ve ever visited.

“___ Libya’s oil production returns to normal, I guess, it will be fifteen months,” said a UN expert．