Did you return the book on me? Why can’t I find it anywhere?—_______. You were writing a letter at your desk at that time.

ly somehospitals in China have adopted ______ they call a robot-doctor, ______ will beused to operate on patients with more accuracy

He made ____clear when he would give us a lecture on global warming.

Look at this! It’s broken now! You __________ have been careful!

— Do you know our town at all? — No, this is the first time I_____ here. [ ]