______ so much electrical equipment,wood and paper in one place,there is a danger of fire.

Nowhere else in the world______ cheaper tailoring than in Hong Kong.

Is he good _____ maths?-No, he does well _____English.[ ]

______ is this? Is it a ruler?—Yes, it is a red ruler.

Do you have any books_____science?-I’m sorry, I don’t.[ ]