The car is quite small, _______ if you have children.       

They didn’t know what I was talking about because they didn’t listen ___________.

----May I borrow your pen, Mike ? ----Yes, of course. Here are some and you can take ______ of them. 

This book is        for a six-year-old child to read.

Please don’t drop litter _______, you should throw it into the dustbin _______.