Lily: Look! I have some new pencils and new crayons.
Mike: Oh, how many new pencils do you have?
Lily: I have fifteen new pencils and twenty new crayons.
Mike: But I can see twelve new crayons only.
Lily: The others(其他的) are in my schoolbag, under the chair.
Mike: Oh, I see.
16. Lily has twelve new crayons. ( )
17. The twelve new crayons are under the chair. ( )
18. Lily has fifteen new pencils. ( )
19. Mike can see twenty new crayons. ( )