Kids don't learn their native language consciously, ________ they become fluent in it very fast.
—Your coffee smells great! —It’s from Mexico.Would you like________?
—He was nearly drowned once. —When was _____? —_____ was 1998 when he was in middle school.
—Will you see to _____ that all the papers should be handed in after class? —All right.
—What do you think of your new colleagues? —They are mostly very kind,but________is so good to me as John.
It was hard for him to learn English in a family,in which _____ of the parents spoke the language.