The little boy is ________ young ________ ride a bike.
---What _____useful book ! ---Yes, it is. But I find it ______ difficult for me to read.
--- Did you finish _____ the book? ---Yes, I did. Thanks ____ your dictionary, I had a better understanding of it.
---Go and ask the waiter how much_____. ---Don’t worry. It has been _____.
--- Our holiday was _______. --- Yes, I’ve never had __________.
The number of the students in our grade _______about six ______, ______ of them are girls.