A lot of children never fully ______ their mothers until it is too late.
If people eat natural poisons by mistake, they ________ go to hospital without delay.
Before us lies the biggest room, ________with things like guns, dolls and old clothes.
The invention of artificial hearts marked a turning point in the battle heart disease.
—Thank you for your coffee.—But you________ it.
Lily seems to know a lot about Hong Kong, but she has never been there.