There are (four desks) in the room.对括号内提问

问题描述:

There are (four desks) in the room.对括号内提问
None of the students knows the answer.(反义疑问句)
The car cost him a lot of money(同义句)
He __________________________

How many desks in the room?
None of the students knows the answer,do they?
He spend a lot of money on the car.