I have more paper clips than_______, but my CDs are fewer than________.

To live a low-carbon life , we must try to save _____ energy and produce ____ carbon .

Have you mended your shoes, Bob？—Yes, I _________ them twenty minutes ago ．

This book isfor a six-year-old child to read.

Have you finished your report yet? —No, I’ll finish it in _______ ten minutes.