What did the teacher say just now?—He asked me _____

This problem is so tough that only______ students can solve it.

What did he _______ just now? —Sorry, I didn’t catch his words. I ­­­­_______ about something else.

I can’t see the words . on the blackboard. Please turn on the light.

Have you found your English book?—No, I haven’t found ________, but I borrowed ________ from Jack this afternoon.