I am too busy _______ my homework _______ my mother wash dishes.

He is no fool at all;_________，he is the smartest boy I have ever seen.

How many photos does your album _______, _______ those taken last week? [ ]

He’s teaching me French my teaching him Chinese

ists across the world agree that thisis an invention of _______ great significance, _______ invention that willgreatly change human life