There is ______ “b” and _______“s” in the word “bookcase”.

_______is your school from here?—It’s about 3 kilometers _____.

Tom isn’t heavy. And he isn’t thin, either. He is _____.[ ]

Lang Lang is a Chinese pianist ________ is famous all over the world.

Can you come to my house_______ Friday eveing______ my birthday party?[ ]