__to attract young readers, the book is full of interesting stories and features simple language.

Some of my friends are interested in science, but none of them can tell ________.

If you try to learn too many things at a time at the beginning, you may _______

Which would you like, tea or coffee –Either ____ OK, but I prefer coffee ___milk.

unken drivers think that they may be lucky to __________ a fine, which maycost their own lives.