The book was written in _______ easy English _______ even primary school students could understand it.

--Spell“color”，please.---______.

There is little milk left in the bottle,______?

--- He has never traveled to a foreign country,        ? --- Yes. He has been to England once.

It’s wise _______ you _______ your child at home alone while it’s also very important _______ him to learn to protect himself.